| 20588 | Unique | Dhs | Howard | -- | 0 | 0.00% |
| 20601 | Standard | Waldorf | Charles | 227 / 240 / 301 / 324 / 369 | 27,789 | 0.45% |
| 20602 | Standard | Waldorf | Charles | 227 / 240 / 301 / 324 / 369 | 28,736 | 0.47% |
| 20603 | Standard | Waldorf | Charles | 227 / 240 / 301 / 324 / 369 | 32,485 | 0.53% |
| 20604 | P.O. Box | Waldorf | Charles | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20606 | Standard | Abell | Saint Marys | 227 / 301 / 324 / 369 | 251 | 0.00% |
| 20607 | Standard | Accokeek | Prince Georges | 227 / 301 / 324 / 369 | 12,762 | 0.21% |
| 20608 | Standard | Aquasco | Prince Georges | 227 / 240 / 301 / 324 / 369 | 878 | 0.01% |
| 20609 | Standard | Avenue | Saint Marys | 227 / 301 / 324 / 369 | 1,076 | 0.02% |
| 20610 | P.O. Box | Barstow | Calvert | 443 / 667 / 410 | 0 | 0.00% |
| 20611 | Standard | Bel Alton | Charles | 227 / 240 / 301 / 324 / 369 | 1,100 | 0.02% |
| 20612 | P.O. Box | Benedict | Charles | 227 / 240 / 301 / 324 / 369 | 232 | 0.00% |
| 20613 | Standard | Brandywine | Prince Georges | 227 / 240 / 301 / 324 / 369 | 15,726 | 0.25% |
| 20615 | Standard | Broomes Island | Calvert | 410 | 379 | 0.01% |
| 20616 | Standard | Bryans Road | Charles | 227 / 301 / 324 / 369 | 7,356 | 0.12% |
| 20617 | Standard | Bryantown | Charles | 227 / 240 / 301 / 324 / 369 | 761 | 0.01% |
| 20618 | Standard | Bushwood | Saint Marys | 227 / 301 / 324 / 369 | 1,073 | 0.02% |
| 20619 | Standard | California | Saint Marys | 227 / 301 / 324 / 369 | 14,179 | 0.23% |
| 20620 | Standard | Callaway | Saint Marys | 227 / 240 / 301 / 324 / 369 | 1,588 | 0.03% |
| 20621 | Standard | Chaptico | Saint Marys | 227 / 301 / 324 / 369 | 1,214 | 0.02% |
| 20622 | Standard | Charlotte Hall | Charles | 227 / 240 / 301 / 324 / 369 | 4,741 | 0.08% |
| 20623 | Standard | Cheltenham | Prince Georges | 227 / 240 / 301 / 324 / 369 | 2,846 | 0.05% |
| 20624 | Standard | Clements | Saint Marys | 227 / 301 / 324 / 369 | 1,138 | 0.02% |
| 20625 | P.O. Box | Cobb Island | Charles | 227 / 240 / 301 / 324 / 369 | 848 | 0.01% |
| 20626 | Standard | Coltons Point | Saint Marys | 227 / 301 / 324 / 369 | 403 | 0.01% |
| 20627 | P.O. Box | Compton | Saint Marys | 227 / 301 / 324 / 369 | 0 | 0.00% |
| 20628 | Standard | Dameron | Saint Marys | 227 / 240 / 301 / 324 / 369 | 599 | 0.01% |
| 20629 | P.O. Box | Dowell | Calvert | 410 / 667 / 443 | 1,188 | 0.02% |
| 20630 | Standard | Drayden | Saint Marys | 227 / 240 / 301 / 324 / 369 | 586 | 0.01% |
| 20632 | Standard | Faulkner | Charles | 227 / 240 | 538 | 0.01% |
| 20634 | Standard | Great Mills | Saint Marys | 227 / 240 / 301 / 324 / 369 | 6,984 | 0.11% |
| 20636 | Standard | Hollywood | Saint Marys | 227 / 301 / 324 / 369 | 10,615 | 0.17% |
| 20637 | Standard | Hughesville | Charles | 227 / 240 / 301 / 324 / 369 | 6,111 | 0.10% |
| 20639 | Standard | Huntingtown | Calvert | 443 / 667 / 410 | 15,344 | 0.25% |
| 20640 | Standard | Indian Head | Charles | 227 / 240 / 301 / 324 / 369 | 9,949 | 0.16% |
| 20645 | Standard | Issue | Charles | 227 / 240 / 301 / 324 / 369 | 769 | 0.01% |
| 20646 | Standard | La Plata | Charles | 227 / 240 / 301 / 324 / 369 | 20,411 | 0.33% |
| 20650 | Standard | Leonardtown | Saint Marys | 227 / 240 / 301 / 324 / 369 | 15,298 | 0.25% |
| 20653 | Standard | Lexington Park | Saint Marys | 227 / 240 / 301 / 324 / 369 | 25,180 | 0.41% |
| 20656 | Standard | Loveville | Saint Marys | 227 / 301 / 324 / 369 | 106 | 0.00% |
| 20657 | Standard | Lusby | Calvert | 410 / 667 / 443 | 20,042 | 0.32% |
| 20658 | Standard | Marbury | Charles | 227 / 240 / 301 / 324 / 369 | 968 | 0.02% |
| 20659 | Standard | Mechanicsville | Saint Marys | 227 / 240 / 301 / 324 / 369 | 24,427 | 0.40% |
| 20660 | P.O. Box | Morganza | Saint Marys | 227 / 301 / 324 / 369 | 107 | 0.00% |
| 20661 | P.O. Box | Mount Victoria | Charles | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20662 | Standard | Nanjemoy | Charles | 227 / 240 / 301 / 324 / 369 | 2,564 | 0.04% |
| 20664 | Standard | Newburg | Charles | 227 / 240 / 301 / 324 / 369 | 2,940 | 0.05% |
| 20667 | Standard | Park Hall | Saint Marys | 227 / 240 / 301 / 324 / 369 | 471 | 0.01% |
| 20670 | Standard | Patuxent River | Saint Marys | 227 / 240 / 301 / 324 / 369 | 1,226 | 0.02% |
| 20674 | Standard | Piney Point | Saint Marys | 227 / 240 / 301 / 324 / 369 | 718 | 0.01% |
| 20675 | Standard | Pomfret | Charles | 227 / 301 / 324 / 369 | 1,728 | 0.03% |
| 20676 | Standard | Port Republic | Calvert | 443 / 410 / 667 | 3,462 | 0.06% |
| 20677 | Standard | Port Tobacco | Charles | 227 / 240 / 301 / 324 / 369 | 2,475 | 0.04% |
| 20678 | Standard | Prince Frederick | Calvert | 443 / 667 / 410 | 12,818 | 0.21% |
| 20680 | Standard | Ridge | Saint Marys | 227 / 240 / 301 / 324 / 369 | 944 | 0.02% |
| 20682 | P.O. Box | Rock Point | Charles | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20684 | Standard | Saint Inigoes | Saint Marys | 227 / 240 / 301 / 324 / 369 | 1,193 | 0.02% |
| 20685 | Standard | Saint Leonard | Calvert | 410 | 6,648 | 0.11% |
| 20686 | P.O. Box | Saint Marys City | Saint Marys | 227 / 240 / 301 / 324 / 369 | 977 | 0.02% |
| 20687 | Standard | Scotland | Saint Marys | 227 / 240 / 301 / 324 / 369 | 304 | 0.00% |
| 20688 | Standard | Solomons | Calvert | 410 / 667 / 443 | 1,462 | 0.02% |
| 20689 | Standard | Sunderland | Calvert | 240 / 227 | 1,915 | 0.03% |
| 20690 | Standard | Tall Timbers | Saint Marys | 227 / 240 / 301 / 324 / 369 | 954 | 0.02% |
| 20692 | Standard | Valley Lee | Saint Marys | 227 / 240 / 301 / 324 / 369 | 738 | 0.01% |
| 20693 | Standard | Welcome | Charles | 227 / 240 / 301 / 324 / 369 | 1,067 | 0.02% |
| 20695 | Standard | White Plains | Charles | 227 / 301 / 324 / 369 | 13,318 | 0.22% |
| 20697 | Unique | Southern Md Facility | Prince Georges | 227 / 240 / 301 / 324 / 369 / 410 | 0 | 0.00% |
| 20701 | Standard | Annapolis Junction | Howard | 443 | 1,195 | 0.02% |
| 20703 | P.O. Box | Lanham | Prince Georges | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20704 | P.O. Box | Beltsville | Prince Georges | 227 / 240 / 301 / 324 / 369 / 410 | 0 | 0.00% |
| 20705 | Standard | Beltsville | Prince Georges | 227 / 240 / 301 / 324 / 369 / 410 | 29,456 | 0.48% |
| 20706 | Standard | Lanham | Prince Georges | 227 / 240 / 301 / 324 / 369 | 43,623 | 0.71% |
| 20707 | Standard | Laurel | Prince Georges | 227 / 240 / 301 / 324 / 369 / 410 / 443 / 667 | 37,702 | 0.61% |
| 20708 | Standard | Laurel | Prince Georges | 227 / 240 / 301 / 324 / 369 / 410 / 443 / 667 | 27,832 | 0.45% |
| 20709 | P.O. Box | Laurel | Prince Georges | 227 / 240 / 301 / 324 / 369 / 410 / 443 / 667 | 0 | 0.00% |
| 20710 | Standard | Bladensburg | Prince Georges | 227 / 240 / 301 / 324 / 369 | 9,850 | 0.16% |
| 20711 | Standard | Lothian | Anne Arundel | 227 / 240 / 301 / 324 / 369 | 7,193 | 0.12% |
| 20712 | Standard | Mount Rainier | Prince Georges | 227 / 240 / 301 / 324 / 369 | 9,526 | 0.15% |
| 20714 | Standard | North Beach | Calvert | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 4,036 | 0.07% |
| 20715 | Standard | Bowie | Prince Georges | 227 / 240 / 301 / 324 / 369 | 27,127 | 0.44% |
| 20716 | Standard | Bowie | Prince Georges | 227 / 301 / 324 / 369 | 22,874 | 0.37% |
| 20717 | P.O. Box | Bowie | Prince Georges | 227 / 301 / 324 / 369 | 0 | 0.00% |
| 20718 | P.O. Box | Bowie | Prince Georges | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20719 | P.O. Box | Bowie | Prince Georges | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20720 | Standard | Bowie | Prince Georges | 227 / 240 / 301 / 324 / 369 | 25,702 | 0.42% |
| 20721 | Standard | Bowie | Prince Georges | 227 / 301 / 324 / 369 | 29,847 | 0.48% |
| 20722 | Standard | Brentwood | Prince Georges | 227 / 240 / 301 / 324 / 369 | 6,498 | 0.11% |
| 20723 | Standard | Laurel | Howard | 227 / 240 / 301 / 324 / 369 / 410 / 443 / 667 | 35,353 | 0.57% |
| 20724 | Standard | Laurel | Anne Arundel | 227 / 240 / 301 / 324 / 369 / 410 / 443 / 667 | 19,163 | 0.31% |
| 20725 | P.O. Box | Laurel | Prince Georges | 227 / 240 / 301 / 324 / 369 / 410 / 443 / 667 | 0 | 0.00% |
| 20726 | P.O. Box | Laurel | Prince Georges | 227 / 240 / 301 / 324 / 369 / 410 / 443 / 667 | 0 | 0.00% |
| 20731 | P.O. Box | Capitol Heights | Prince Georges | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20732 | Standard | Chesapeake Beach | Calvert | 240 / 227 | 10,626 | 0.17% |
| 20733 | Standard | Churchton | Anne Arundel | 443 / 667 / 410 | 2,806 | 0.05% |
| 20735 | Standard | Clinton | Prince Georges | 227 / 240 / 301 / 324 / 369 | 38,200 | 0.62% |
| 20736 | Standard | Owings | Calvert | 240 / 227 | 9,632 | 0.16% |
| 20737 | Standard | Riverdale | Prince Georges | 227 / 240 / 301 / 324 / 369 | 24,555 | 0.40% |
| 20738 | P.O. Box | Riverdale | Prince Georges | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20740 | Standard | College Park | Prince Georges | 227 / 240 / 301 / 324 / 369 | 36,930 | 0.60% |
| 20741 | P.O. Box | College Park | Prince Georges | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20742 | Unique | College Park | Prince Georges | 227 / 240 / 301 / 324 / 369 | 4,769 | 0.08% |
| 20743 | Standard | Capitol Heights | Prince Georges | 227 / 240 / 301 / 324 / 369 | 40,709 | 0.66% |
| 20744 | Standard | Fort Washington | Prince Georges | 227 / 240 / 301 / 324 / 369 | 52,747 | 0.85% |
| 20745 | Standard | Oxon Hill | Prince Georges | 227 / 240 / 301 / 324 / 369 | 32,024 | 0.52% |
| 20746 | Standard | Suitland | Prince Georges | 227 / 240 / 301 / 324 / 369 | 31,635 | 0.51% |
| 20747 | Standard | District Heights | Prince Georges | 227 / 240 / 301 / 324 / 369 | 40,696 | 0.66% |
| 20748 | Standard | Temple Hills | Prince Georges | 227 / 240 / 301 / 324 / 369 | 39,689 | 0.64% |
| 20749 | P.O. Box | Fort Washington | Prince Georges | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20750 | P.O. Box | Oxon Hill | Prince Georges | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20751 | Standard | Deale | Anne Arundel | 443 / 667 / 410 | 2,374 | 0.04% |
| 20752 | P.O. Box | Suitland | Prince Georges | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20753 | P.O. Box | District Heights | Prince Georges | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20754 | Standard | Dunkirk | Calvert | 240 / 227 | 6,913 | 0.11% |
| 20755 | Standard | Fort George G Meade | Anne Arundel | 227 / 240 / 301 / 324 / 369 / 410 / 443 / 667 | 9,324 | 0.15% |
| 20757 | P.O. Box | Temple Hills | Prince Georges | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20758 | Standard | Friendship | Anne Arundel | 240 / 227 | 741 | 0.01% |
| 20759 | Standard | Fulton | Howard | 227 / 240 | 6,562 | 0.11% |
| 20762 | Standard | Andrews Air Force Base | Prince Georges | 227 / 240 / 301 / 324 / 369 | 3,002 | 0.05% |
| 20763 | Standard | Savage | Howard | 443 | 2,745 | 0.04% |
| 20764 | Standard | Shady Side | Anne Arundel | 443 / 667 / 410 | 4,199 | 0.07% |
| 20765 | P.O. Box | Galesville | Anne Arundel | 443 / 667 / 410 | 466 | 0.01% |
| 20768 | P.O. Box | Greenbelt | Prince Georges | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20769 | Standard | Glenn Dale | Prince Georges | 227 / 240 / 301 / 324 / 369 | 7,009 | 0.11% |
| 20770 | Standard | Greenbelt | Prince Georges | 227 / 240 / 301 / 324 / 369 | 28,612 | 0.46% |
| 20771 | Unique | Greenbelt | Prince Georges | 227 / 240 / 301 / 324 / 369 | 3 | 0.00% |
| 20772 | Standard | Upper Marlboro | Prince Georges | 227 / 240 / 301 / 324 / 369 | 51,395 | 0.83% |
| 20773 | P.O. Box | Upper Marlboro | Prince Georges | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20774 | Standard | Upper Marlboro | Prince Georges | 227 / 240 / 301 / 324 / 369 | 51,984 | 0.84% |
| 20775 | P.O. Box | Upper Marlboro | Prince Georges | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20776 | Standard | Harwood | Anne Arundel | 443 / 667 / 410 | 3,266 | 0.05% |
| 20777 | Standard | Highland | Howard | 227 / 240 | 3,527 | 0.06% |
| 20778 | Standard | West River | Anne Arundel | 443 / 667 / 410 | 1,871 | 0.03% |
| 20779 | Standard | Tracys Landing | Anne Arundel | 240 / 227 | 1,272 | 0.02% |
| 20781 | Standard | Hyattsville | Prince Georges | 227 / 240 / 301 / 324 / 369 | 13,662 | 0.22% |
| 20782 | Standard | Hyattsville | Prince Georges | 227 / 240 / 301 / 324 / 369 | 35,356 | 0.57% |
| 20783 | Standard | Hyattsville | Prince Georges | 227 / 301 / 324 / 369 | 48,946 | 0.79% |
| 20784 | Standard | Hyattsville | Prince Georges | 227 / 301 / 324 / 369 | 32,567 | 0.53% |
| 20785 | Standard | Hyattsville | Prince Georges | 227 / 240 / 301 / 324 / 369 | 41,636 | 0.67% |
| 20787 | P.O. Box | Hyattsville | Prince Georges | 227 / 301 / 324 / 369 | 0 | 0.00% |
| 20788 | P.O. Box | Hyattsville | Prince Georges | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20790 | Unique | Capitol Heights | Prince Georges | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20791 | P.O. Box | Capitol Heights | Prince Georges | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20792 | P.O. Box | Upper Marlboro | Prince Georges | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20794 | Standard | Jessup | Howard | 410 / 443 / 667 | 16,658 | 0.27% |
| 20797 | Unique | Southern Md Facility | Prince Georges | 227 / 240 / 301 / 324 / 369 / 410 / 443 / 667 | 0 | 0.00% |
| 20799 | Unique | Capitol Heights | Prince Georges | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20810 | Unique | Bethesda | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20811 | Unique | Bethesda | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20812 | Standard | Glen Echo | Montgomery | 227 / 240 / 301 / 324 / 369 | 287 | 0.00% |
| 20813 | P.O. Box | Bethesda | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20814 | Standard | Bethesda | Montgomery | 227 / 240 / 301 / 324 / 369 | 31,919 | 0.52% |
| 20815 | Standard | Chevy Chase | Montgomery | 227 / 240 / 301 / 324 / 369 | 31,517 | 0.51% |
| 20816 | Standard | Bethesda | Montgomery | 227 / 240 / 301 / 324 / 369 | 17,035 | 0.28% |
| 20817 | Standard | Bethesda | Montgomery | 227 / 240 / 301 / 324 / 369 | 38,908 | 0.63% |
| 20818 | Standard | Cabin John | Montgomery | 227 / 240 / 301 / 324 / 369 | 1,832 | 0.03% |
| 20824 | P.O. Box | Bethesda | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20825 | P.O. Box | Chevy Chase | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20827 | P.O. Box | Bethesda | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20830 | P.O. Box | Olney | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20832 | Standard | Olney | Montgomery | 227 / 240 / 301 / 324 / 369 | 25,969 | 0.42% |
| 20833 | Standard | Brookeville | Montgomery | 227 / 240 / 301 / 324 / 369 | 7,913 | 0.13% |
| 20837 | Standard | Poolesville | Montgomery | 227 / 240 / 301 / 324 / 369 | 6,634 | 0.11% |
| 20838 | Standard | Barnesville | Montgomery | 227 / 240 / 301 / 324 / 369 | 218 | 0.00% |
| 20839 | Standard | Bealsville | Montgomery | 227 / 240 / 301 / 324 / 369 | 176 | 0.00% |
| 20841 | Standard | Boyds | Montgomery | 227 / 240 / 301 / 324 / 369 | 9,538 | 0.15% |
| 20842 | Standard | Dickerson | Montgomery | 227 / 240 / 301 / 324 / 369 | 2,021 | 0.03% |
| 20847 | P.O. Box | Rockville | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20848 | P.O. Box | Rockville | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20849 | P.O. Box | Rockville | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20850 | Standard | Rockville | Montgomery | 227 / 240 / 301 / 324 / 369 | 51,045 | 0.83% |
| 20851 | Standard | Rockville | Montgomery | 227 / 240 / 301 / 324 / 369 | 14,327 | 0.23% |
| 20852 | Standard | Rockville | Montgomery | 227 / 240 / 301 / 324 / 369 | 48,347 | 0.78% |
| 20853 | Standard | Rockville | Montgomery | 227 / 240 / 301 / 324 / 369 | 30,611 | 0.50% |
| 20854 | Standard | Potomac | Montgomery | 227 / 301 / 324 / 369 | 50,698 | 0.82% |
| 20855 | Standard | Derwood | Montgomery | 227 / 240 / 301 / 324 / 369 | 17,003 | 0.28% |
| 20857 | Unique | Rockville | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20859 | P.O. Box | Potomac | Montgomery | 227 / 301 / 324 / 369 | 0 | 0.00% |
| 20860 | Standard | Sandy Spring | Montgomery | 227 / 240 / 301 / 324 / 369 | 2,079 | 0.03% |
| 20861 | Standard | Ashton | Montgomery | 227 / 240 / 301 / 324 / 369 | 3,067 | 0.05% |
| 20862 | Standard | Brinklow | Montgomery | 227 / 240 / 301 / 324 / 369 | 453 | 0.01% |
| 20866 | Standard | Burtonsville | Montgomery | 227 / 301 / 324 / 369 | 15,199 | 0.25% |
| 20868 | Standard | Spencerville | Montgomery | 227 / 301 / 324 / 369 | 671 | 0.01% |
| 20871 | Standard | Clarksburg | Montgomery | 227 / 240 / 301 / 324 / 369 | 28,557 | 0.46% |
| 20872 | Standard | Damascus | Montgomery | 227 / 240 / 301 / 324 / 369 | 13,349 | 0.22% |
| 20874 | Standard | Germantown | Montgomery | 227 / 301 / 324 / 369 | 62,908 | 1.02% |
| 20875 | P.O. Box | Germantown | Montgomery | 227 / 301 / 324 / 369 | 0 | 0.00% |
| 20876 | Standard | Germantown | Montgomery | 227 / 240 / 301 / 324 / 369 | 26,034 | 0.42% |
| 20877 | Standard | Gaithersburg | Montgomery | 227 / 240 / 301 / 324 / 369 | 37,577 | 0.61% |
| 20878 | Standard | Gaithersburg | Montgomery | 227 / 301 / 324 / 369 | 65,990 | 1.07% |
| 20879 | Standard | Gaithersburg | Montgomery | 227 / 240 / 301 / 324 / 369 | 26,176 | 0.42% |
| 20880 | P.O. Box | Washington Grove | Montgomery | 227 / 240 / 301 / 324 / 369 | 504 | 0.01% |
| 20882 | Standard | Gaithersburg | Montgomery | 227 / 240 / 301 / 324 / 369 | 13,890 | 0.22% |
| 20883 | P.O. Box | Gaithersburg | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20884 | P.O. Box | Gaithersburg | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20885 | P.O. Box | Gaithersburg | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20886 | Standard | Montgomery Village | Montgomery | 227 / 240 / 301 / 324 / 369 | 35,649 | 0.58% |
| 20889 | Unique | Bethesda | Montgomery | 227 / 240 / 301 / 324 / 369 | 1,010 | 0.02% |
| 20891 | P.O. Box | Kensington | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20892 | Unique | Bethesda | Montgomery | 227 / 240 / 301 / 324 / 369 | 2 | 0.00% |
| 20894 | Unique | Bethesda | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20895 | Standard | Kensington | Montgomery | 227 / 240 / 301 / 324 / 369 | 19,753 | 0.32% |
| 20896 | P.O. Box | Garrett Park | Montgomery | 227 / 240 / 301 / 324 / 369 | 1,019 | 0.02% |
| 20897 | Unique | Suburb Maryland Fac | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20898 | P.O. Box | Gaithersburg | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20899 | Unique | Gaithersburg | Montgomery | 227 / 240 / 301 / 324 / 369 | 125 | 0.00% |
| 20901 | Standard | Silver Spring | Montgomery | 227 / 240 / 301 / 324 / 369 | 36,537 | 0.59% |
| 20902 | Standard | Silver Spring | Montgomery | 227 / 240 / 301 / 324 / 369 | 52,533 | 0.85% |
| 20903 | Standard | Silver Spring | Montgomery | 227 / 301 / 324 / 369 | 24,103 | 0.39% |
| 20904 | Standard | Silver Spring | Montgomery | 227 / 301 / 324 / 369 | 59,051 | 0.96% |
| 20905 | Standard | Silver Spring | Montgomery | 227 / 301 / 324 / 369 | 17,700 | 0.29% |
| 20906 | Standard | Silver Spring | Montgomery | 227 / 240 / 301 / 324 / 369 | 71,641 | 1.16% |
| 20907 | P.O. Box | Silver Spring | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20908 | P.O. Box | Silver Spring | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20910 | Standard | Silver Spring | Montgomery | 227 / 240 / 301 / 324 / 369 | 45,610 | 0.74% |
| 20911 | P.O. Box | Silver Spring | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20912 | Standard | Takoma Park | Montgomery | 227 / 240 / 301 / 324 / 369 | 25,463 | 0.41% |
| 20913 | P.O. Box | Takoma Park | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20914 | P.O. Box | Silver Spring | Montgomery | 227 / 301 / 324 / 369 | 0 | 0.00% |
| 20915 | P.O. Box | Silver Spring | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20916 | P.O. Box | Silver Spring | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20918 | P.O. Box | Silver Spring | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 20993 | Unique | Silver Spring | Montgomery | 227 / 301 / 324 / 369 | 0 | 0.00% |
| 20997 | Unique | Silver Spring | Montgomery | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 21001 | Standard | Aberdeen | Harford | 667 / 443 / 410 | 25,714 | 0.42% |
| 21005 | Standard | Aberdeen Proving Ground | Harford | 667 / 443 | 1,709 | 0.03% |
| 21009 | Standard | Abingdon | Harford | 410 | 31,835 | 0.52% |
| 21010 | Standard | Gunpowder | Harford | 667 | 153 | 0.00% |
| 21012 | Standard | Arnold | Anne Arundel | 667 / 410 | 22,377 | 0.36% |
| 21013 | Standard | Baldwin | Baltimore | 410 / 443 / 667 | 4,861 | 0.08% |
| 21014 | Standard | Bel Air | Harford | 443 / 410 / 667 | 38,395 | 0.62% |
| 21015 | Standard | Bel Air | Harford | 443 / 410 / 667 | 30,400 | 0.49% |
| 21017 | Standard | Belcamp | Harford | 410 | 6,526 | 0.11% |
| 21018 | P.O. Box | Benson | Harford | 443 / 410 / 667 | 0 | 0.00% |
| 21020 | P.O. Box | Boring | Baltimore | 443 / 410 / 667 | 0 | 0.00% |
| 21022 | P.O. Box | Brooklandville | Baltimore | 667 | 0 | 0.00% |
| 21023 | P.O. Box | Butler | Baltimore | 443 / 410 / 667 | 89 | 0.00% |
| 21027 | P.O. Box | Chase | Baltimore | 443 / 667 / 410 | 0 | 0.00% |
| 21028 | Standard | Churchville | Harford | 443 / 410 / 667 | 3,172 | 0.05% |
| 21029 | Standard | Clarksville | Howard | 227 / 240 | 12,919 | 0.21% |
| 21030 | Standard | Cockeysville | Baltimore | 410 / 443 / 667 | 26,156 | 0.42% |
| 21031 | Standard | Hunt Valley | Baltimore | 410 / 443 / 667 | 11 | 0.00% |
| 21032 | Standard | Crownsville | Anne Arundel | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 9,180 | 0.15% |
| 21034 | Standard | Darlington | Harford | 667 / 443 / 410 | 3,314 | 0.05% |
| 21035 | Standard | Davidsonville | Anne Arundel | 227 / 301 / 324 / 369 / 410 | 8,298 | 0.13% |
| 21036 | Standard | Dayton | Howard | 227 / 240 | 2,307 | 0.04% |
| 21037 | Standard | Edgewater | Anne Arundel | 227 / 301 / 324 / 369 / 410 | 21,453 | 0.35% |
| 21040 | Standard | Edgewood | Harford | 410 / 443 / 667 | 25,138 | 0.41% |
| 21041 | P.O. Box | Ellicott City | Howard | 410 / 443 / 667 | 0 | 0.00% |
| 21042 | Standard | Ellicott City | Howard | 227 / 240 / 410 / 443 / 667 | 43,147 | 0.70% |
| 21043 | Standard | Ellicott City | Howard | 410 / 443 / 667 | 48,775 | 0.79% |
| 21044 | Standard | Columbia | Howard | 227 / 240 / 301 / 324 / 369 / 410 / 443 / 667 | 44,284 | 0.72% |
| 21045 | Standard | Columbia | Howard | 227 / 240 / 301 / 324 / 369 / 410 / 443 / 667 | 39,321 | 0.64% |
| 21046 | Standard | Columbia | Howard | 227 / 240 / 301 / 324 / 369 / 410 / 443 / 667 | 16,023 | 0.26% |
| 21047 | Standard | Fallston | Harford | 443 / 410 / 667 | 12,876 | 0.21% |
| 21048 | Standard | Finksburg | Carroll | 443 / 667 | 10,774 | 0.17% |
| 21050 | Standard | Forest Hill | Harford | 443 / 410 / 667 | 18,681 | 0.30% |
| 21051 | Standard | Fork | Baltimore | 410 / 443 / 667 | 256 | 0.00% |
| 21052 | P.O. Box | Fort Howard | Baltimore | 443 / 410 / 667 | 430 | 0.01% |
| 21053 | Standard | Freeland | Baltimore | 443 / 410 / 667 | 3,199 | 0.05% |
| 21054 | Standard | Gambrills | Anne Arundel | 227 / 240 | 13,970 | 0.23% |
| 21056 | P.O. Box | Gibson Island | Anne Arundel | 667 / 410 | 329 | 0.01% |
| 21057 | Standard | Glen Arm | Baltimore | 410 / 443 / 667 | 4,060 | 0.07% |
| 21060 | Standard | Glen Burnie | Anne Arundel | 443 / 410 / 667 | 38,269 | 0.62% |
| 21061 | Standard | Glen Burnie | Anne Arundel | 443 / 410 / 667 | 57,352 | 0.93% |
| 21062 | Unique | Glen Burnie | Anne Arundel | 443 / 410 / 667 | 0 | 0.00% |
| 21065 | Unique | Hunt Valley | Baltimore | 410 / 443 / 667 | 0 | 0.00% |
| 21071 | P.O. Box | Glyndon | Baltimore | 443 / 410 | 619 | 0.01% |
| 21074 | Standard | Hampstead | Carroll | 443 / 667 / 410 | 15,279 | 0.25% |
| 21075 | Standard | Elkridge | Howard | 227 / 240 / 410 / 443 / 667 | 35,900 | 0.58% |
| 21076 | Standard | Hanover | Howard | 443 | 22,299 | 0.36% |
| 21077 | Standard | Harmans | Anne Arundel | 443 | 336 | 0.01% |
| 21078 | Standard | Havre De Grace | Harford | 667 / 443 / 410 | 20,321 | 0.33% |
| 21082 | Standard | Hydes | Baltimore | 410 / 443 / 667 | 815 | 0.01% |
| 21084 | Standard | Jarrettsville | Harford | 443 / 410 / 667 | 7,600 | 0.12% |
| 21085 | Standard | Joppa | Harford | 443 | 17,142 | 0.28% |
| 21087 | Standard | Kingsville | Baltimore | 410 / 443 / 667 | 5,634 | 0.09% |
| 21088 | P.O. Box | Lineboro | Carroll | 443 / 410 | 0 | 0.00% |
| 21090 | Standard | Linthicum Heights | Anne Arundel | 410 / 443 / 667 | 10,623 | 0.17% |
| 21092 | P.O. Box | Long Green | Baltimore | 410 / 443 / 667 | 0 | 0.00% |
| 21093 | Standard | Lutherville Timonium | Baltimore | 667 | 38,677 | 0.63% |
| 21094 | P.O. Box | Lutherville Timonium | Baltimore | 667 | 0 | 0.00% |
| 21102 | Standard | Manchester | Carroll | 443 / 410 | 12,100 | 0.20% |
| 21104 | Standard | Marriottsville | Carroll | 443 / 410 / 667 | 5,686 | 0.09% |
| 21105 | P.O. Box | Maryland Line | Baltimore | 443 / 410 / 667 | 56 | 0.00% |
| 21106 | P.O. Box | Mayo | Anne Arundel | 227 / 301 / 324 / 369 / 410 | 0 | 0.00% |
| 21108 | Standard | Millersville | Anne Arundel | 443 / 410 | 18,065 | 0.29% |
| 21111 | Standard | Monkton | Baltimore | 667 | 5,062 | 0.08% |
| 21113 | Standard | Odenton | Anne Arundel | 227 / 240 / 301 / 324 / 369 / 410 / 443 | 35,670 | 0.58% |
| 21114 | Standard | Crofton | Anne Arundel | 227 / 240 / 410 / 443 / 667 | 26,404 | 0.43% |
| 21117 | Standard | Owings Mills | Baltimore | 667 | 59,154 | 0.96% |
| 21120 | Standard | Parkton | Baltimore | 443 / 410 / 667 | 7,178 | 0.12% |
| 21122 | Standard | Pasadena | Anne Arundel | 410 / 443 / 667 | 62,368 | 1.01% |
| 21123 | P.O. Box | Pasadena | Anne Arundel | 410 / 443 / 667 | 0 | 0.00% |
| 21128 | Standard | Perry Hall | Baltimore | 410 | 14,861 | 0.24% |
| 21130 | P.O. Box | Perryman | Harford | 410 | 140 | 0.00% |
| 21131 | Standard | Phoenix | Baltimore | 410 / 443 / 667 | 7,468 | 0.12% |
| 21132 | Standard | Pylesville | Harford | 443 / 667 / 410 | 2,930 | 0.05% |
| 21133 | Standard | Randallstown | Baltimore | 443 / 410 / 667 | 30,527 | 0.49% |
| 21136 | Standard | Reisterstown | Baltimore | 443 / 410 / 667 | 34,973 | 0.57% |
| 21139 | P.O. Box | Riderwood | Baltimore | 410 / 443 / 667 | 0 | 0.00% |
| 21140 | Standard | Riva | Anne Arundel | 227 / 301 / 324 / 369 / 410 | 3,625 | 0.06% |
| 21144 | Standard | Severn | Anne Arundel | 410 / 443 / 667 | 37,295 | 0.60% |
| 21146 | Standard | Severna Park | Anne Arundel | 410 / 443 / 667 | 28,593 | 0.46% |
| 21150 | P.O. Box | Simpsonville | Howard | 227 / 240 / 301 / 324 / 369 / 410 / 443 / 667 | 0 | 0.00% |
| 21152 | Standard | Sparks Glencoe | Baltimore | 443 / 410 / 667 | 6,045 | 0.10% |
| 21153 | P.O. Box | Stevenson | Baltimore | 410 / 443 / 667 | 865 | 0.01% |
| 21154 | Standard | Street | Harford | 443 / 667 / 410 | 6,309 | 0.10% |
| 21155 | Standard | Upperco | Baltimore | 443 / 410 / 667 | 2,553 | 0.04% |
| 21156 | Standard | Upper Falls | Baltimore | 410 / 443 / 667 | 259 | 0.00% |
| 21157 | Standard | Westminster | Carroll | 443 / 410 / 667 | 38,584 | 0.62% |
| 21158 | Standard | Westminster | Carroll | 443 / 410 / 667 | 20,917 | 0.34% |
| 21160 | Standard | Whiteford | Harford | 443 / 667 / 410 | 2,449 | 0.04% |
| 21161 | Standard | White Hall | Harford | 443 / 410 / 667 | 5,333 | 0.09% |
| 21162 | Standard | White Marsh | Baltimore | 443 / 667 / 410 | 5,029 | 0.08% |
| 21163 | Standard | Woodstock | Howard | 227 / 240 / 410 / 443 / 667 | 7,657 | 0.12% |
| 21201 | Standard | Baltimore | Baltimore City | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 18,382 | 0.30% |
| 21202 | Standard | Baltimore | Baltimore City | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 22,247 | 0.36% |
| 21203 | P.O. Box | Baltimore | Baltimore City | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 0 | 0.00% |
| 21204 | Standard | Towson | Baltimore | 410 / 443 / 667 | 20,967 | 0.34% |
| 21205 | Standard | Baltimore | Baltimore City | 410 / 443 | 14,691 | 0.24% |
| 21206 | Standard | Baltimore | Baltimore City | 410 / 443 | 49,470 | 0.80% |
| 21207 | Standard | Gwynn Oak | Baltimore | 410 / 667 / 443 | 46,595 | 0.75% |
| 21208 | Standard | Pikesville | Baltimore | 410 / 443 / 667 | 35,007 | 0.57% |
| 21209 | Standard | Baltimore | Baltimore City | 410 | 28,659 | 0.46% |
| 21210 | Standard | Baltimore | Baltimore City | 410 / 443 | 14,441 | 0.23% |
| 21211 | Standard | Baltimore | Baltimore City | 410 / 443 | 17,721 | 0.29% |
| 21212 | Standard | Baltimore | Baltimore City | 443 / 667 / 410 | 32,317 | 0.52% |
| 21213 | Standard | Baltimore | Baltimore City | 410 / 443 | 28,217 | 0.46% |
| 21214 | Standard | Baltimore | Baltimore City | 410 / 443 | 19,344 | 0.31% |
| 21215 | Standard | Baltimore | Baltimore City | 410 | 54,198 | 0.88% |
| 21216 | Standard | Baltimore | Baltimore City | 410 | 27,729 | 0.45% |
| 21217 | Standard | Baltimore | Baltimore City | 410 / 443 | 30,448 | 0.49% |
| 21218 | Standard | Baltimore | Baltimore City | 410 / 443 | 46,238 | 0.75% |
| 21219 | Standard | Sparrows Point | Baltimore | 443 / 410 / 667 | 9,594 | 0.16% |
| 21220 | Standard | Middle River | Baltimore | 443 / 667 / 410 | 44,568 | 0.72% |
| 21221 | Standard | Essex | Baltimore | 410 / 443 / 667 | 43,381 | 0.70% |
| 21222 | Standard | Dundalk | Baltimore | 410 / 443 | 59,062 | 0.96% |
| 21223 | Standard | Baltimore | Baltimore City | 667 / 410 | 20,438 | 0.33% |
| 21224 | Standard | Baltimore | Baltimore City | 410 | 54,266 | 0.88% |
| 21225 | Standard | Brooklyn | Baltimore City | 410 / 443 / 667 | 34,138 | 0.55% |
| 21226 | Standard | Curtis Bay | Anne Arundel | 410 / 443 / 667 | 7,368 | 0.12% |
| 21227 | Standard | Halethorpe | Baltimore | 227 / 240 / 410 / 443 / 667 | 35,837 | 0.58% |
| 21228 | Standard | Catonsville | Baltimore | 410 / 443 / 667 | 50,418 | 0.82% |
| 21229 | Standard | Baltimore | Baltimore City | 410 | 43,464 | 0.70% |
| 21230 | Standard | Baltimore | Baltimore City | 667 / 410 | 36,660 | 0.59% |
| 21231 | Standard | Baltimore | Baltimore City | 410 / 443 / 667 | 17,062 | 0.28% |
| 21233 | Standard | Baltimore | Baltimore City | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 4 | 0.00% |
| 21234 | Standard | Parkville | Baltimore | 410 / 443 / 667 | 67,308 | 1.09% |
| 21235 | Unique | Baltimore | Baltimore City | 410 | 0 | 0.00% |
| 21236 | Standard | Nottingham | Baltimore | 410 / 443 / 667 | 40,555 | 0.66% |
| 21237 | Standard | Rosedale | Baltimore | 410 / 443 / 667 | 31,477 | 0.51% |
| 21239 | Standard | Baltimore | Baltimore City | 410 / 443 | 26,605 | 0.43% |
| 21240 | Standard | Baltimore | Anne Arundel | 227 / 240 / 410 / 443 / 667 | 0 | 0.00% |
| 21241 | Unique | Baltimore | Baltimore City | 410 | 0 | 0.00% |
| 21244 | Standard | Windsor Mill | Baltimore | 410 | 38,015 | 0.62% |
| 21250 | Unique | Baltimore | Baltimore | 410 / 443 / 667 | 3,391 | 0.05% |
| 21251 | Unique | Baltimore | Baltimore City | 410 / 443 | 277 | 0.00% |
| 21252 | Unique | Towson | Baltimore | 410 / 443 / 667 | 5,775 | 0.09% |
| 21263 | Unique | Baltimore | Baltimore City | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 0 | 0.00% |
| 21264 | Unique | Baltimore | Baltimore City | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 0 | 0.00% |
| 21270 | P.O. Box | Baltimore | Baltimore City | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 0 | 0.00% |
| 21273 | Unique | Baltimore | Baltimore City | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 0 | 0.00% |
| 21275 | Unique | Baltimore | Baltimore City | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 0 | 0.00% |
| 21278 | Unique | Baltimore | Baltimore City | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 0 | 0.00% |
| 21279 | Unique | Baltimore | Baltimore City | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 0 | 0.00% |
| 21281 | P.O. Box | Baltimore | Baltimore City | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 0 | 0.00% |
| 21282 | P.O. Box | Pikesville | Baltimore | 227 / 240 / 410 / 443 / 667 | 0 | 0.00% |
| 21284 | P.O. Box | Towson | Baltimore | 410 / 443 / 667 | 0 | 0.00% |
| 21285 | P.O. Box | Towson | Baltimore | 410 / 443 / 667 | 2 | 0.00% |
| 21286 | Standard | Towson | Baltimore | 410 / 443 / 667 | 21,470 | 0.35% |
| 21287 | Standard | Baltimore | Baltimore City | 667 | 0 | 0.00% |
| 21289 | Unique | Baltimore | Baltimore City | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 0 | 0.00% |
| 21290 | Unique | Baltimore | Baltimore City | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 0 | 0.00% |
| 21297 | P.O. Box | Baltimore | Baltimore City | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 0 | 0.00% |
| 21298 | Unique | Baltimore | Baltimore City | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 0 | 0.00% |
| 21401 | Standard | Annapolis | Anne Arundel | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 39,308 | 0.64% |
| 21402 | Standard | Annapolis | Anne Arundel | 410 / 443 / 667 | 1,026 | 0.02% |
| 21403 | Standard | Annapolis | Anne Arundel | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 31,521 | 0.51% |
| 21404 | P.O. Box | Annapolis | Anne Arundel | 667 | 0 | 0.00% |
| 21405 | Standard | Annapolis | Anne Arundel | 227 / 301 / 324 / 369 / 410 / 443 / 667 | 622 | 0.01% |
| 21409 | Standard | Annapolis | Anne Arundel | 443 | 20,326 | 0.33% |
| 21411 | Unique | Annapolis | Anne Arundel | 667 | 0 | 0.00% |
| 21412 | Standard | Annapolis | Anne Arundel | 667 | 0 | 0.00% |
| 21501 | P.O. Box | Cumberland | Allegany | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 21502 | Standard | Cumberland | Allegany | 227 / 240 / 301 / 324 / 369 | 41,153 | 0.67% |
| 21503 | P.O. Box | Cumberland | Allegany | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 21504 | P.O. Box | Cumberland | Allegany | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 21505 | P.O. Box | Cumberland | Allegany | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 21520 | Standard | Accident | Garrett | 227 / 240 / 301 / 324 / 369 | 2,060 | 0.03% |
| 21521 | Standard | Barton | Allegany | 227 / 240 / 301 / 324 / 369 | 1,171 | 0.02% |
| 21522 | Standard | Bittinger | Garrett | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 21523 | Standard | Bloomington | Garrett | 227 / 301 / 324 / 369 | 271 | 0.00% |
| 21524 | P.O. Box | Corriganville | Allegany | 227 / 240 / 301 / 324 / 369 | 500 | 0.01% |
| 21528 | P.O. Box | Eckhart Mines | Allegany | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 21529 | P.O. Box | Ellerslie | Allegany | 227 / 240 / 301 / 324 / 369 | 651 | 0.01% |
| 21530 | Standard | Flintstone | Allegany | 227 / 240 | 1,520 | 0.02% |
| 21531 | Standard | Friendsville | Garrett | 227 / 240 / 301 / 324 / 369 | 2,176 | 0.04% |
| 21532 | Standard | Frostburg | Allegany | 227 / 240 / 301 / 324 / 369 | 13,328 | 0.22% |
| 21536 | Standard | Grantsville | Garrett | 227 / 240 / 301 / 324 / 369 | 4,029 | 0.07% |
| 21538 | Standard | Kitzmiller | Garrett | 227 / 240 / 301 / 324 / 369 | 622 | 0.01% |
| 21539 | Standard | Lonaconing | Allegany | 227 / 240 / 301 / 324 / 369 | 2,536 | 0.04% |
| 21540 | Standard | Luke | Allegany | 227 / 240 / 301 / 324 / 369 | 85 | 0.00% |
| 21541 | Standard | Mc Henry | Garrett | 227 / 240 / 301 / 324 / 369 | 1,626 | 0.03% |
| 21542 | P.O. Box | Midland | Allegany | 227 / 240 / 301 / 324 / 369 | 110 | 0.00% |
| 21543 | P.O. Box | Midlothian | Allegany | 227 / 240 / 301 / 324 / 369 | 230 | 0.00% |
| 21545 | Standard | Mount Savage | Allegany | 227 / 240 / 301 / 324 / 369 | 1,719 | 0.03% |
| 21550 | Standard | Oakland | Garrett | 227 / 240 / 301 / 324 / 369 | 13,499 | 0.22% |
| 21555 | Standard | Oldtown | Allegany | 227 / 240 / 301 / 324 / 369 | 1,619 | 0.03% |
| 21556 | P.O. Box | Pinto | Allegany | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 21557 | Standard | Rawlings | Allegany | 227 / 240 / 301 / 324 / 369 | 1,911 | 0.03% |
| 21560 | P.O. Box | Spring Gap | Allegany | 227 / 240 / 301 / 324 / 369 | 35 | 0.00% |
| 21561 | Standard | Swanton | Garrett | 227 / 301 / 324 / 369 | 2,571 | 0.04% |
| 21562 | Standard | Westernport | Allegany | 227 / 240 / 301 / 324 / 369 | 2,857 | 0.05% |
| 21601 | Standard | Easton | Talbot | 410 / 443 / 667 | 23,945 | 0.39% |
| 21607 | Standard | Barclay | Queen Annes | 410 | 492 | 0.01% |
| 21609 | P.O. Box | Bethlehem | Caroline | 667 / 410 | 0 | 0.00% |
| 21610 | Standard | Betterton | Kent | 667 / 410 | 297 | 0.00% |
| 21612 | Standard | Bozman | Talbot | 667 / 410 | 432 | 0.01% |
| 21613 | Standard | Cambridge | Dorchester | 443 / 667 / 410 | 17,967 | 0.29% |
| 21617 | Standard | Centreville | Queen Annes | 667 / 410 / 443 | 10,719 | 0.17% |
| 21619 | Standard | Chester | Queen Annes | 667 / 410 / 443 | 6,598 | 0.11% |
| 21620 | Standard | Chestertown | Kent | 443 / 410 / 667 | 12,726 | 0.21% |
| 21622 | Standard | Church Creek | Dorchester | 667 | 475 | 0.01% |
| 21623 | Standard | Church Hill | Queen Annes | 410 / 667 | 2,244 | 0.04% |
| 21624 | P.O. Box | Claiborne | Talbot | 667 / 410 | 201 | 0.00% |
| 21625 | Standard | Cordova | Talbot | 667 | 2,329 | 0.04% |
| 21626 | Standard | Crapo | Dorchester | 667 / 410 | 101 | 0.00% |
| 21627 | Standard | Crocheron | Dorchester | 410 | 27 | 0.00% |
| 21628 | P.O. Box | Crumpton | Queen Annes | 667 | 496 | 0.01% |
| 21629 | Standard | Denton | Caroline | 410 / 667 / 443 | 9,911 | 0.16% |
| 21631 | Standard | East New Market | Dorchester | 410 / 443 | 2,644 | 0.04% |
| 21632 | Standard | Federalsburg | Caroline | 667 / 410 / 443 | 6,616 | 0.11% |
| 21634 | Standard | Fishing Creek | Dorchester | 667 / 410 | 302 | 0.00% |
| 21635 | Standard | Galena | Kent | 667 / 410 | 1,969 | 0.03% |
| 21636 | Standard | Goldsboro | Caroline | 667 / 410 | 1,186 | 0.02% |
| 21638 | Standard | Grasonville | Queen Annes | 410 / 667 / 443 | 5,058 | 0.08% |
| 21639 | Standard | Greensboro | Caroline | 667 / 410 | 4,354 | 0.07% |
| 21640 | Standard | Henderson | Caroline | 667 / 410 | 1,798 | 0.03% |
| 21641 | P.O. Box | Hillsboro | Caroline | 667 / 410 | 128 | 0.00% |
| 21643 | Standard | Hurlock | Dorchester | 667 / 410 | 5,820 | 0.09% |
| 21644 | Standard | Ingleside | Queen Annes | 410 | 93 | 0.00% |
| 21645 | Standard | Kennedyville | Kent | 667 / 410 | 1,005 | 0.02% |
| 21647 | Standard | Mcdaniel | Talbot | 667 / 410 | 248 | 0.00% |
| 21648 | Standard | Madison | Dorchester | 667 | 233 | 0.00% |
| 21649 | Standard | Marydel | Caroline | 667 / 410 | 1,764 | 0.03% |
| 21650 | Standard | Massey | Kent | 667 / 410 | 206 | 0.00% |
| 21651 | Standard | Millington | Kent | 410 / 667 | 2,718 | 0.04% |
| 21652 | P.O. Box | Neavitt | Talbot | 667 / 410 | 161 | 0.00% |
| 21653 | P.O. Box | Newcomb | Talbot | 667 / 410 | 124 | 0.00% |
| 21654 | Standard | Oxford | Talbot | 667 / 410 | 1,129 | 0.02% |
| 21655 | Standard | Preston | Caroline | 667 / 410 | 4,798 | 0.08% |
| 21656 | P.O. Box | Price | Queen Annes | 410 / 667 | 0 | 0.00% |
| 21657 | Standard | Queen Anne | Queen Annes | 410 / 667 | 1,108 | 0.02% |
| 21658 | Standard | Queenstown | Queen Annes | 410 / 667 / 443 | 3,723 | 0.06% |
| 21659 | Standard | Rhodesdale | Dorchester | 410 / 443 / 667 | 1,102 | 0.02% |
| 21660 | Standard | Ridgely | Caroline | 667 / 410 | 3,927 | 0.06% |
| 21661 | Standard | Rock Hall | Kent | 667 / 410 | 2,427 | 0.04% |
| 21662 | Standard | Royal Oak | Talbot | 667 / 410 | 668 | 0.01% |
| 21663 | Standard | Saint Michaels | Talbot | 667 / 410 | 3,142 | 0.05% |
| 21664 | P.O. Box | Secretary | Dorchester | 410 / 443 | 472 | 0.01% |
| 21665 | Standard | Sherwood | Talbot | 667 / 410 | 291 | 0.00% |
| 21666 | Standard | Stevensville | Queen Annes | 667 / 410 / 443 | 12,848 | 0.21% |
| 21667 | Standard | Still Pond | Kent | 667 / 410 | 285 | 0.00% |
| 21668 | Standard | Sudlersville | Queen Annes | 667 | 1,745 | 0.03% |
| 21669 | P.O. Box | Taylors Island | Dorchester | 667 | 189 | 0.00% |
| 21670 | P.O. Box | Templeville | Caroline | 667 / 410 | 0 | 0.00% |
| 21671 | Standard | Tilghman | Talbot | 410 / 667 | 773 | 0.01% |
| 21672 | Standard | Toddville | Dorchester | 410 | 158 | 0.00% |
| 21673 | Standard | Trappe | Talbot | 410 / 443 / 667 | 3,122 | 0.05% |
| 21675 | Standard | Wingate | Dorchester | 410 | 87 | 0.00% |
| 21676 | Standard | Wittman | Talbot | 667 / 410 | 315 | 0.01% |
| 21677 | Standard | Woolford | Dorchester | 667 | 415 | 0.01% |
| 21678 | Standard | Worton | Kent | 410 | 2,145 | 0.03% |
| 21679 | Standard | Wye Mills | Talbot | 410 | 429 | 0.01% |
| 21690 | Unique | Chestertown | Queen Annes | 410 / 667 | 0 | 0.00% |
| 21701 | Standard | Frederick | Frederick | 227 / 240 / 301 / 324 / 369 | 39,629 | 0.64% |
| 21702 | Standard | Frederick | Frederick | 227 / 240 / 301 / 324 / 369 | 46,412 | 0.75% |
| 21703 | Standard | Frederick | Frederick | 227 / 240 / 301 / 324 / 369 | 41,138 | 0.67% |
| 21704 | Standard | Frederick | Frederick | 227 / 240 / 301 / 324 / 369 | 19,275 | 0.31% |
| 21705 | P.O. Box | Frederick | Frederick | 227 / 240 / 301 / 324 / 369 | 9 | 0.00% |
| 21709 | Unique | Frederick | Frederick | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 21710 | Standard | Adamstown | Frederick | 227 / 240 / 301 / 324 / 369 | 4,769 | 0.08% |
| 21711 | Standard | Big Pool | Washington | 227 / 240 / 301 / 324 / 369 | 1,108 | 0.02% |
| 21713 | Standard | Boonsboro | Washington | 227 / 240 / 301 / 324 / 369 | 9,800 | 0.16% |
| 21714 | P.O. Box | Braddock Heights | Frederick | 227 / 240 / 301 / 324 / 369 | 358 | 0.01% |
| 21715 | P.O. Box | Brownsville | Washington | 227 / 240 / 301 / 324 / 369 | 87 | 0.00% |
| 21716 | Standard | Brunswick | Frederick | 227 / 240 / 301 / 324 / 369 | 6,753 | 0.11% |
| 21717 | P.O. Box | Buckeystown | Frederick | 227 / 240 / 301 / 324 / 369 | 199 | 0.00% |
| 21718 | Standard | Burkittsville | Frederick | 227 / 240 / 301 / 324 / 369 | 134 | 0.00% |
| 21719 | Standard | Cascade | Washington | 227 / 240 / 301 / 324 / 369 | 1,230 | 0.02% |
| 21720 | P.O. Box | Cavetown | Washington | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 21721 | P.O. Box | Chewsville | Washington | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 21722 | Standard | Clear Spring | Washington | 227 / 240 / 301 / 324 / 369 | 5,674 | 0.09% |
| 21723 | Standard | Cooksville | Howard | 443 / 667 / 410 | 937 | 0.02% |
| 21727 | Standard | Emmitsburg | Frederick | 227 / 240 / 301 / 324 / 369 | 6,593 | 0.11% |
| 21733 | Standard | Fairplay | Washington | 227 / 240 / 301 / 324 / 369 | 1,134 | 0.02% |
| 21734 | P.O. Box | Funkstown | Washington | 227 / 240 / 301 / 324 / 369 | 845 | 0.01% |
| 21737 | Standard | Glenelg | Howard | 227 / 240 | 2,318 | 0.04% |
| 21738 | Standard | Glenwood | Howard | 443 / 667 / 410 | 3,373 | 0.05% |
| 21740 | Standard | Hagerstown | Washington | 227 / 240 / 301 / 324 / 369 | 65,619 | 1.06% |
| 21741 | P.O. Box | Hagerstown | Washington | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 21742 | Standard | Hagerstown | Washington | 227 / 240 / 301 / 324 / 369 | 33,069 | 0.54% |
| 21746 | Unique | Hagerstown | Washington | 227 / 240 / 301 / 324 / 369 | 2,861 | 0.05% |
| 21747 | P.O. Box | Hagerstown | Washington | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 21749 | Unique | Hagerstown | Washington | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 21750 | Standard | Hancock | Washington | 227 / 240 / 301 / 324 / 369 | 3,662 | 0.06% |
| 21754 | Standard | Ijamsville | Frederick | 227 / 240 | 7,115 | 0.12% |
| 21755 | Standard | Jefferson | Frederick | 227 / 240 / 301 / 324 / 369 | 5,627 | 0.09% |
| 21756 | Standard | Keedysville | Washington | 227 / 240 / 301 / 324 / 369 | 3,669 | 0.06% |
| 21757 | Standard | Keymar | Carroll | 443 / 410 / 667 | 2,870 | 0.05% |
| 21758 | Standard | Knoxville | Frederick | 227 / 240 / 301 / 324 / 369 | 4,809 | 0.08% |
| 21759 | P.O. Box | Ladiesburg | Frederick | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 21762 | P.O. Box | Libertytown | Frederick | 227 / 240 / 301 / 324 / 369 | 233 | 0.00% |
| 21765 | P.O. Box | Lisbon | Howard | 443 / 667 / 410 | 0 | 0.00% |
| 21766 | Standard | Little Orleans | Allegany | 227 / 240 | 633 | 0.01% |
| 21767 | Standard | Maugansville | Washington | 227 / 240 / 301 / 324 / 369 | 1,150 | 0.02% |
| 21769 | Standard | Middletown | Frederick | 227 / 240 / 301 / 324 / 369 | 11,759 | 0.19% |
| 21770 | Standard | Monrovia | Frederick | 227 / 240 / 301 / 324 / 369 | 7,575 | 0.12% |
| 21771 | Standard | Mount Airy | Frederick | 227 / 240 / 301 / 324 / 369 | 30,697 | 0.50% |
| 21773 | Standard | Myersville | Frederick | 227 / 240 / 301 / 324 / 369 | 5,410 | 0.09% |
| 21774 | Standard | New Market | Frederick | 227 / 240 / 301 / 324 / 369 | 15,496 | 0.25% |
| 21775 | P.O. Box | New Midway | Frederick | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 21776 | Standard | New Windsor | Carroll | 443 / 667 / 410 | 5,726 | 0.09% |
| 21777 | Standard | Point Of Rocks | Frederick | 227 / 240 / 301 / 324 / 369 | 1,890 | 0.03% |
| 21778 | Standard | Rocky Ridge | Frederick | 227 / 240 / 301 / 324 / 369 | 1,145 | 0.02% |
| 21779 | Standard | Rohrersville | Washington | 227 / 240 / 301 / 324 / 369 | 971 | 0.02% |
| 21780 | Standard | Sabillasville | Frederick | 227 / 240 / 301 / 324 / 369 | 1,688 | 0.03% |
| 21781 | P.O. Box | Saint James | Washington | 227 / 240 / 301 / 324 / 369 | 165 | 0.00% |
| 21782 | Standard | Sharpsburg | Washington | 227 / 240 / 301 / 324 / 369 | 3,866 | 0.06% |
| 21783 | Standard | Smithsburg | Washington | 227 / 240 / 301 / 324 / 369 | 9,306 | 0.15% |
| 21784 | Standard | Sykesville | Carroll | 443 / 410 / 667 | 40,028 | 0.65% |
| 21787 | Standard | Taneytown | Carroll | 443 / 410 / 667 | 11,066 | 0.18% |
| 21788 | Standard | Thurmont | Frederick | 227 / 240 / 301 / 324 / 369 | 11,491 | 0.19% |
| 21790 | Standard | Tuscarora | Frederick | 227 / 240 / 301 / 324 / 369 | 93 | 0.00% |
| 21791 | Standard | Union Bridge | Carroll | 443 / 410 / 667 | 5,292 | 0.09% |
| 21792 | P.O. Box | Unionville | Frederick | 227 / 240 / 301 / 324 / 369 | 0 | 0.00% |
| 21793 | Standard | Walkersville | Frederick | 227 / 240 / 301 / 324 / 369 | 10,447 | 0.17% |
| 21794 | Standard | West Friendship | Howard | 443 / 667 / 410 | 2,532 | 0.04% |
| 21795 | Standard | Williamsport | Washington | 227 / 240 / 301 / 324 / 369 | 9,873 | 0.16% |
| 21797 | Standard | Woodbine | Howard | 443 / 667 / 410 | 8,956 | 0.14% |
| 21798 | Standard | Woodsboro | Frederick | 227 / 240 / 301 / 324 / 369 | 2,366 | 0.04% |
| 21801 | Standard | Salisbury | Wicomico | 410 / 667 / 443 | 31,183 | 0.50% |
| 21802 | P.O. Box | Salisbury | Wicomico | 410 / 667 / 443 | 0 | 0.00% |
| 21803 | P.O. Box | Salisbury | Wicomico | 410 / 667 / 443 | 0 | 0.00% |
| 21804 | Standard | Salisbury | Wicomico | 410 / 667 / 443 | 40,049 | 0.65% |
| 21810 | P.O. Box | Allen | Wicomico | 667 | 199 | 0.00% |
| 21811 | Standard | Berlin | Worcester | 410 / 667 / 443 | 23,907 | 0.39% |
| 21813 | Standard | Bishopville | Worcester | 667 / 410 / 443 | 2,862 | 0.05% |
| 21814 | Standard | Bivalve | Wicomico | 410 / 443 / 667 | 342 | 0.01% |
| 21817 | Standard | Crisfield | Somerset | 410 / 667 / 443 | 4,825 | 0.08% |
| 21821 | Standard | Deal Island | Somerset | 667 / 410 | 847 | 0.01% |
| 21822 | Standard | Eden | Worcester | 410 / 443 / 667 | 2,548 | 0.04% |
| 21824 | Standard | Ewell | Somerset | 410 / 667 | 166 | 0.00% |
| 21826 | Standard | Fruitland | Wicomico | 667 | 5,436 | 0.09% |
| 21829 | Standard | Girdletree | Worcester | 410 / 443 / 667 | 479 | 0.01% |
| 21830 | Standard | Hebron | Wicomico | 410 / 443 | 4,217 | 0.07% |
| 21835 | Standard | Linkwood | Dorchester | 410 / 443 | 472 | 0.01% |
| 21836 | P.O. Box | Manokin | Somerset | 410 / 443 / 667 | 0 | 0.00% |
| 21837 | Standard | Mardela Springs | Wicomico | 410 / 443 / 667 | 2,647 | 0.04% |
| 21838 | Standard | Marion Station | Somerset | 410 / 667 | 1,717 | 0.03% |
| 21840 | Standard | Nanticoke | Wicomico | 410 / 443 / 667 | 371 | 0.01% |
| 21841 | Standard | Newark | Worcester | 410 / 667 / 443 | 903 | 0.01% |
| 21842 | Standard | Ocean City | Worcester | 410 / 443 / 667 | 11,104 | 0.18% |
| 21843 | P.O. Box | Ocean City | Worcester | 410 / 443 / 667 | 0 | 0.00% |
| 21849 | Standard | Parsonsburg | Wicomico | 410 / 667 / 443 | 3,162 | 0.05% |
| 21850 | Standard | Pittsville | Wicomico | 410 / 443 / 667 | 3,167 | 0.05% |
| 21851 | Standard | Pocomoke City | Worcester | 443 / 410 / 667 | 7,229 | 0.12% |
| 21852 | P.O. Box | Powellville | Wicomico | 410 / 443 / 667 | 0 | 0.00% |
| 21853 | Standard | Princess Anne | Somerset | 410 / 443 / 667 | 10,179 | 0.16% |
| 21856 | Standard | Quantico | Wicomico | 410 / 443 / 667 | 879 | 0.01% |
| 21857 | P.O. Box | Rehobeth | Somerset | 410 / 667 | 0 | 0.00% |
| 21861 | P.O. Box | Sharptown | Wicomico | 410 / 443 / 667 | 830 | 0.01% |
| 21862 | Standard | Showell | Worcester | 667 / 410 / 443 | 119 | 0.00% |
| 21863 | Standard | Snow Hill | Worcester | 410 / 443 / 667 | 4,843 | 0.08% |
| 21864 | Standard | Stockton | Worcester | 410 / 443 / 667 | 590 | 0.01% |
| 21865 | Standard | Tyaskin | Wicomico | 410 / 443 / 667 | 439 | 0.01% |
| 21866 | P.O. Box | Tylerton | Somerset | 410 / 667 | 36 | 0.00% |
| 21867 | P.O. Box | Upper Fairmount | Somerset | 410 / 667 | 78 | 0.00% |
| 21869 | Standard | Vienna | Dorchester | 667 | 908 | 0.01% |
| 21871 | Standard | Westover | Somerset | 410 / 667 | 1,918 | 0.03% |
| 21872 | Standard | Whaleyville | Worcester | 667 / 410 / 443 | 684 | 0.01% |
| 21874 | Standard | Willards | Wicomico | 410 / 443 / 667 | 2,240 | 0.04% |
| 21875 | Standard | Delmar | Wicomico | 443 / 410 / 667 | 7,231 | 0.12% |
| 21890 | Unique | Westover | Somerset | 410 / 443 / 667 | 3,258 | 0.05% |
| 21901 | Standard | North East | Cecil | 443 / 667 / 410 | 18,517 | 0.30% |
| 21902 | P.O. Box | Perry Point | Cecil | 443 / 667 / 410 | 414 | 0.01% |
| 21903 | Standard | Perryville | Cecil | 443 / 667 / 410 | 5,835 | 0.09% |
| 21904 | Standard | Port Deposit | Cecil | 443 / 667 / 410 | 6,689 | 0.11% |
| 21911 | Standard | Rising Sun | Cecil | 410 | 11,207 | 0.18% |
| 21912 | Standard | Warwick | Cecil | 667 / 410 | 1,312 | 0.02% |
| 21913 | P.O. Box | Cecilton | Cecil | 667 / 410 | 682 | 0.01% |
| 21914 | P.O. Box | Charlestown | Cecil | 443 / 667 / 410 | 736 | 0.01% |
| 21915 | Standard | Chesapeake City | Cecil | 667 / 443 / 410 | 2,981 | 0.05% |
| 21916 | P.O. Box | Childs | Cecil | 443 / 410 / 667 | 0 | 0.00% |
| 21917 | Standard | Colora | Cecil | 410 | 2,384 | 0.04% |
| 21918 | Standard | Conowingo | Cecil | 410 | 4,269 | 0.07% |
| 21919 | Standard | Earleville | Cecil | 667 / 410 | 3,124 | 0.05% |
| 21920 | P.O. Box | Elk Mills | Cecil | 443 / 410 / 667 | 555 | 0.01% |
| 21921 | Standard | Elkton | Cecil | 443 / 410 / 667 | 44,983 | 0.73% |
| 21922 | P.O. Box | Elkton | Cecil | 443 / 410 / 667 | 0 | 0.00% |
| 21930 | P.O. Box | Georgetown | Cecil | 667 / 410 | 56 | 0.00% |