| ZIP Codes: | 215 ZIP Codes (165 Standard, 24 PO Box, 26 Unique) [See All] |
| Area Codes: | 217 / 224 / 312 / 331 / 447 / 464 / 630 / 708 / 773 / 815 / 847 / 872 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:53:17 PM |
| Population: | 5,132,257 [See All] |
| FIPS: | 17031 |
| CBSA: | Chicago-Naperville-Elgin, IL-IN |
| Land Area: | 921 sq mi |
| Water Area: | 26 sq mi |
| Coordinates: | 41.8656, -87.7717 |
| Quick Link: |
5,132,257 residents live across 215 ZIPs covering 921 sq mi, served by 96 distinct USPS-recognized cities.
Population moved from 5,180,697 to 5,121,430 from 2014 to 2024 — a -1.1% change. 73 ZIPs gained residents, 91 lost.
The county's wealthiest ZIP 60093 (Winnetka, $250,001 median) and poorest ZIP 60621 (Chicago, $31,905) are 23.7 miles apart — a 7.8× income gap across local geography.
Median home values vary 17.1× across this county — from $91,000 in 60426 (Harvey) to $1,560,300 in 60043 (Kenilworth).
Density varies 96× across the county — from 484 people/sq mi in 60480 (Willow Springs) to 46,412 in 60611 (Chicago).
Most of the decade's growth concentrated around Chicago — top growth ZIPs averaged +52.7% over the past ten years ( 60301 , 60654 and 60601 ).
Educational attainment ranges from 10.8% bachelor's+ in 60426 (Harvey) to 93.6% in 60606 (Chicago) — the breadth of educational profiles across the area.
Within Illinois, this is the #1 most populous of 102 counties and ranks #10 for median household income .
On the national stage, Cook County is the #2 most populous US county .
Hosts 4 single-entity Unique ZIPs: 60196Multi High Volume Firms ; 60208Northwestern Univ Admin ; 60688Jt Weeker Isc ; and 60179Sears Roebuck And Company .
Weighted by population, the typical household earns about $86,837 across the county — reflecting what a typical resident sees, not a simple ZIP average.
42.6% of adults age 25+ hold a bachelor's degree or higher (1,534,805 of 3,606,220 reporting). The most-educated ZIPs cluster around Chicago.
165 Standard delivery, 24 PO Box only, 26 single-entity Unique ZIPs serve this county.
39 ZIPs in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
26 ZIP codes in this county serve a single facility — typically theme parks, universities, large corporations, airports, or government complexes.
Median household income spans 7.8× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 60629 | Chicago | Standard | 108,324 | $60,826 | 7.0 | -5.8% |
| 60618 | Chicago | Standard | 91,901 | $106,384 | 5.1 | -4.5% |
| 60632 | Chicago | Standard | 89,107 | $64,809 | 7.6 | -2.5% |
| 60647 | Chicago | Standard | 84,749 | $107,060 | 3.9 | -3.0% |
| 60639 | Chicago | Standard | 84,240 | $61,089 | 4.9 | -8.8% |
| 60804 | Cicero | Standard | 82,797 | $70,842 | 7.2 | -2.0% |
| 60623 | Chicago | Standard | 81,277 | $51,878 | 5.5 | -7.5% |
| 60608 | Chicago | Standard | 80,737 | $73,366 | 6.5 | 2.3% |
| 60625 | Chicago | Standard | 76,760 | $85,703 | 3.8 | -2.3% |
| 60617 | Chicago | Standard | 74,790 | $51,778 | 17.9 | -9.5% |
| 60634 | Chicago | Standard | 73,885 | $88,533 | 6.7 | 1.0% |
| 60657 | Chicago | Standard | 71,904 | $110,939 | 2.1 | 3.5% |
| 60614 | Chicago | Standard | 70,693 | $136,448 | 3.4 | 3.1% |
| 60641 | Chicago | Standard | 68,894 | $83,758 | 4.0 | -4.9% |
| 60640 | Chicago | Standard | 65,445 | $73,254 | 2.4 | 1.3% |
| 60620 | Chicago | Standard | 64,871 | $48,146 | 6.7 | -9.8% |
| 60402 | Berwyn | Standard | 63,721 | $77,718 | 5.8 | -0.8% |
| 60651 | Chicago | Standard | 63,335 | $54,409 | 3.6 | 3.9% |
| 60609 | Chicago | Standard | 62,028 | $58,896 | 7.8 | -0.6% |
| 60016 | Des Plaines | Standard | 60,898 | $86,571 | 12.0 | -0.8% |
| 60628 | Chicago | Standard | 60,431 | $54,644 | 10.9 | -13.6% |
| 60619 | Chicago | Standard | 59,503 | $45,206 | 6.1 | -7.4% |
| 60638 | Chicago | Standard | 57,074 | $91,070 | 11.3 | 0.5% |
| 60453 | Oak Lawn | Standard | 56,861 | $83,911 | 8.6 | -0.3% |
| 60056 | Mount Prospect | Standard | 55,818 | $101,922 | 10.8 | 0.4% |
| 60630 | Chicago | Standard | 55,486 | $98,860 | 4.6 | -2.6% |
| 60622 | Chicago | Standard | 54,609 | $136,277 | 2.5 | 0.0% |
| 60616 | Chicago | Standard | 54,308 | $73,819 | 3.8 | 8.8% |
| 60637 | Chicago | Standard | 52,721 | $43,609 | 4.3 | 7.9% |
| 60613 | Chicago | Standard | 52,244 | $95,572 | 2.2 | 6.0% |
| 60411 | Chicago Heights | Standard | 52,175 | $62,073 | 31.1 | -11.5% |
| 60004 | Arlington Heights | Standard | 51,835 | $128,979 | 11.4 | 3.2% |
| 60626 | Chicago | Standard | 49,662 | $59,713 | 1.8 | 0.9% |
| 60645 | Chicago | Standard | 48,208 | $76,045 | 2.3 | 4.1% |
| 60649 | Chicago | Standard | 48,056 | $44,175 | 3.2 | 6.3% |
| 60644 | Chicago | Standard | 47,210 | $40,950 | 3.5 | -4.8% |
| 60643 | Chicago | Standard | 45,942 | $80,852 | 7.6 | -9.8% |
| 60610 | Chicago | Standard | 44,883 | $105,226 | 1.1 | 16.6% |
| 60201 | Evanston | Standard | 43,744 | $90,545 | 4.4 | 2.4% |
| 60615 | Chicago | Standard | 42,975 | $63,876 | 2.3 | 4.5% |
| 60660 | Chicago | Standard | 42,724 | $67,479 | 1.3 | 3.2% |
| 60659 | Chicago | Standard | 41,728 | $68,704 | 2.1 | 7.6% |
| 60025 | Glenview | Standard | 41,689 | $126,904 | 10.2 | 6.2% |
| 60462 | Orland Park | Standard | 41,456 | $96,526 | 15.9 | 6.2% |
| 60062 | Northbrook | Standard | 41,406 | $143,323 | 19.8 | 3.0% |
| 60707 | Elmwood Park | Standard | 41,116 | $84,799 | 4.1 | -4.3% |
| 60652 | Chicago | Standard | 41,074 | $80,020 | 5.0 | -3.0% |
| 60193 | Schaumburg | Standard | 40,146 | $95,972 | 10.2 | -0.2% |
| 60107 | Streamwood | Standard | 38,886 | $101,100 | 11.9 | -5.5% |
| 60068 | Park Ridge | Standard | 38,650 | $143,222 | 7.3 | 3.0% |
| 60090 | Wheeling | Standard | 38,298 | $85,355 | 8.9 | 1.0% |
| 60067 | Palatine | Standard | 38,204 | $125,446 | 13.4 | -0.3% |
| 60611 | Chicago | Standard | 37,705 | $125,675 | 0.8 | 23.0% |
| 60133 | Hanover Park | Standard | 36,732 | $91,763 | 8.6 | -4.3% |
| 60074 | Palatine | Standard | 36,460 | $84,089 | 7.1 | -6.5% |
| 60605 | Chicago | Standard | 36,210 | $123,922 | 1.5 | 39.6% |
| 60477 | Tinley Park | Standard | 35,976 | $94,927 | 15.4 | -6.2% |
| 60612 | Chicago | Standard | 35,744 | $60,922 | 3.7 | 0.4% |
| 60624 | Chicago | Standard | 35,263 | $34,030 | 3.5 | -11.2% |
| 60409 | Calumet City | Standard | 35,100 | $55,369 | 7.2 | -6.3% |
| 60169 | Hoffman Estates | Standard | 33,401 | $90,774 | 9.4 | -2.2% |
| 60653 | Chicago | Standard | 33,383 | $40,666 | 2.3 | 7.6% |
| 60076 | Skokie | Standard | 32,953 | $113,818 | 5.0 | 0.6% |
| 60302 | Oak Park | Standard | 32,862 | $100,680 | 3.0 | 2.3% |
| 60007 | Elk Grove Village | Standard | 32,592 | $93,494 | 16.8 | -3.7% |
| 60607 | Chicago | Standard | 32,392 | $127,732 | 2.3 | 24.9% |
| 60202 | Evanston | Standard | 32,341 | $98,989 | 3.0 | -0.7% |
| 60636 | Chicago | Standard | 32,198 | $38,807 | 3.9 | -19.8% |
| 60525 | La Grange | Standard | 31,324 | $116,918 | 13.9 | -1.1% |
| 60631 | Chicago | Standard | 30,924 | $115,000 | 3.8 | 10.5% |
| 60714 | Niles | Standard | 30,305 | $75,800 | 6.3 | 0.7% |
| 60656 | Chicago | Standard | 29,538 | $95,766 | 2.6 | 2.2% |
| 60005 | Arlington Heights | Standard | 28,843 | $99,743 | 6.4 | -5.3% |
| 60438 | Lansing | Standard | 28,806 | $75,681 | 9.6 | -0.5% |
| 60646 | Chicago | Standard | 28,780 | $112,525 | 4.8 | 1.5% |
| 60459 | Burbank | Standard | 28,739 | $80,116 | 4.2 | -1.2% |
| 60077 | Skokie | Standard | 28,501 | $78,523 | 4.3 | 2.4% |
| 60655 | Chicago | Standard | 28,434 | $114,723 | 4.3 | 1.5% |
| 60621 | Chicago | Standard | 28,301 | $31,905 | 3.7 | -13.2% |
| 60018 | Des Plaines | Standard | 27,952 | $90,574 | 9.1 | -3.7% |
| 60091 | Wilmette | Standard | 27,333 | $189,909 | 5.4 | 0.0% |
| 60452 | Oak Forest | Standard | 26,739 | $93,076 | 8.3 | -5.2% |
| 60487 | Tinley Park | Standard | 26,043 | $131,793 | 7.8 | -3.5% |
| 60654 | Chicago | Standard | 25,755 | $147,357 | 0.6 | 58.6% |
| 60827 | Riverdale | Standard | 24,713 | $37,217 | 7.1 | -14.1% |
| 60053 | Morton Grove | Standard | 24,619 | $111,116 | 5.3 | 5.1% |
| 60160 | Melrose Park | Standard | 24,549 | $66,189 | 4.4 | -4.1% |
| 60467 | Orland Park | Standard | 24,398 | $114,812 | 16.3 | -10.7% |
| 60706 | Harwood Heights | Standard | 24,260 | $84,530 | 3.0 | 4.3% |
| 60439 | Lemont | Standard | 24,192 | $121,724 | 29.7 | 4.2% |
| 60426 | Harvey | Standard | 23,906 | $42,196 | 7.5 | -17.0% |
| 60406 | Blue Island | Standard | 23,327 | $56,557 | 5.9 | -9.2% |
| 60153 | Maywood | Standard | 23,201 | $68,815 | 3.6 | -4.0% |
| 60008 | Rolling Meadows | Standard | 22,800 | $94,336 | 7.1 | 1.8% |
| 60803 | Alsip | Standard | 22,106 | $67,014 | 7.6 | -3.8% |
| 60642 | Chicago | Standard | 21,789 | $143,175 | 1.8 | 12.3% |
| 60466 | Park Forest | Standard | 21,461 | $61,654 | 6.2 | -5.5% |
| 60473 | South Holland | Standard | 21,225 | $85,659 | 8.7 | -5.7% |
| 60164 | Melrose Park | Standard | 20,872 | $81,263 | 4.7 | -6.3% |
| 60419 | Dolton | Standard | 20,825 | $57,887 | 4.5 | -8.7% |
| 60443 | Matteson | Standard | 20,663 | $92,136 | 14.1 | -2.9% |
| 60093 | Winnetka | Standard | 19,867 | $250,001 | 8.4 | 2.5% |
| 60430 | Homewood | Standard | 19,838 | $96,629 | 6.0 | -3.5% |
| 60194 | Schaumburg | Standard | 19,756 | $97,994 | 0.9 | 0.8% |
| 60805 | Evergreen Park | Standard | 19,420 | $95,719 | 3.4 | -2.5% |
| 60513 | Brookfield | Standard | 19,343 | $110,338 | 3.1 | 1.6% |
| 60104 | Bellwood | Standard | 18,256 | $79,513 | 2.4 | -4.3% |
| 60465 | Palos Hills | Standard | 18,081 | $83,533 | 5.6 | 2.7% |
| 60131 | Franklin Park | Standard | 18,054 | $76,658 | 5.3 | -0.3% |
| 60304 | Oak Park | Standard | 16,955 | $136,178 | 1.5 | -4.1% |
| 60455 | Bridgeview | Standard | 16,872 | $66,745 | 4.1 | 1.9% |
| 60192 | Hoffman Estates | Standard | 16,461 | $153,495 | 12.0 | -1.1% |
| 60154 | Westchester | Standard | 16,436 | $98,954 | 4.1 | -2.4% |
| 60478 | Country Club Hills | Standard | 16,390 | $74,826 | 6.7 | -4.2% |
| 60546 | Riverside | Standard | 16,322 | $113,533 | 3.9 | 2.3% |
| 60070 | Prospect Heights | Standard | 15,496 | $84,775 | 3.7 | -3.3% |
| 60601 | Chicago | Standard | 15,235 | $121,458 | 0.4 | 39.8% |
| 60429 | Hazel Crest | Standard | 14,864 | $66,988 | 4.3 | -5.6% |
| 60457 | Hickory Hills | Standard | 14,503 | $76,786 | 3.6 | 2.7% |
| 60445 | Midlothian | Standard | 14,268 | $70,634 | 4.6 | -45.4% |
| 60458 | Justice | Standard | 14,200 | $60,758 | 2.9 | -1.6% |
| 60415 | Chicago Ridge | Standard | 14,099 | $68,964 | 2.3 | -1.8% |
| 60026 | Glenview | Standard | 14,069 | $137,778 | 4.4 | 2.1% |
| 60130 | Forest Park | Standard | 13,943 | $77,221 | 2.5 | -1.8% |
| 60463 | Palos Heights | Standard | 13,722 | $107,977 | 5.4 | -4.4% |
| 60173 | Schaumburg | Standard | 13,650 | $104,390 | 5.6 | 12.7% |
| 60526 | La Grange Park | Standard | 13,459 | $120,308 | 2.6 | -1.1% |
| 60558 | Western Springs | Standard | 13,446 | $230,255 | 3.4 | 2.9% |
| 60712 | Lincolnwood | Standard | 13,112 | $109,731 | 2.7 | 3.6% |
| 60471 | Richton Park | Standard | 12,848 | $64,494 | 4.2 | -8.4% |
| 60633 | Chicago | Standard | 12,474 | $62,458 | 10.3 | -4.5% |
| 60305 | River Forest | Standard | 11,992 | $146,786 | 2.3 | 7.0% |
| 60501 | Summit Argo | Standard | 11,432 | $63,244 | 4.2 | -4.5% |
| 60661 | Chicago | Standard | 11,398 | $125,741 | 0.3 | 29.0% |
| 60176 | Schiller Park | Standard | 11,393 | $69,696 | 3.6 | -3.8% |
| 60428 | Markham | Standard | 10,927 | $60,000 | 5.3 | -14.0% |
| 60482 | Worth | Standard | 10,897 | $55,709 | 2.4 | -1.3% |
| 60418 | Crestwood | Standard | 10,572 | $75,752 | 3.3 | — |
| 60171 | River Grove | Standard | 10,451 | $69,858 | 2.0 | 1.4% |
| 60534 | Lyons | Standard | 10,327 | $70,890 | 2.1 | -3.0% |
| 60475 | Steger | Standard | 10,035 | $67,487 | 4.3 | 3.5% |
| 60464 | Palos Park | Standard | 9,773 | $126,087 | 12.5 | 2.7% |
| 60422 | Flossmoor | Standard | 9,542 | $134,477 | 4.4 | 4.5% |
| 60425 | Glenwood | Standard | 8,714 | $77,174 | 4.1 | -4.2% |
| 60022 | Glencoe | Standard | 8,352 | $250,001 | 3.7 | -0.4% |
| 60162 | Hillside | Standard | 8,084 | $72,320 | 3.5 | -0.7% |
| 60155 | Broadview | Standard | 7,906 | $64,566 | 1.9 | -0.5% |
| 60480 | Willow Springs | Standard | 5,388 | $98,917 | 11.1 | 3.8% |
| 60469 | Posen | Standard | 5,205 | $73,676 | 1.2 | -12.3% |
| 60163 | Berkeley | Standard | 5,199 | $85,823 | 1.5 | -0.4% |
| 60461 | Olympia Fields | Standard | 4,761 | $124,417 | 3.4 | -2.8% |
| 60203 | Evanston | Standard | 4,680 | $170,224 | 0.7 | 4.9% |
| 60472 | Robbins | Standard | 4,563 | $40,668 | 1.6 | -13.1% |
| 60165 | Stone Park | Standard | 4,482 | $67,224 | 0.3 | -9.6% |
| 60195 | Schaumburg | Standard | 4,397 | $90,174 | 0.7 | 2.4% |
| 60456 | Hometown | Standard | 4,215 | $61,101 | 0.5 | -3.3% |
| 60606 | Chicago | Standard | 3,840 | $128,609 | 0.3 | 35.2% |
| 60301 | Oak Park | Standard | 3,475 | $99,167 | 0.1 | 59.8% |
| 60043 | Kenilworth | Standard | 2,503 | $250,001 | 0.6 | -5.5% |
| 60476 | Thornton | Standard | 1,940 | $59,647 | 3.2 | -31.4% |
| 60602 | Chicago | Standard | 1,480 | $126,202 | 0.1 | 3.6% |
| 60603 | Chicago | Standard | 1,298 | $133,545 | 0.1 | 29.5% |
| 60604 | Chicago | Standard | 616 | $81,658 | 0.1 | 47.0% |
| 60029 | Golf | PO Box | 518 | $242,772 | 0.6 | 8.4% |
| 60208 | Evanston | Unique | 255 | — | 0.3 | — |
| 60141 | Hines | PO Box | 195 | $18,717 | 0.2 | 24.2% |
| 60682 | Chicago | Unique | — | — | 0.0 | — |
| 60686 | Chicago | Unique | — | — | 0.0 | — |
| 60699 | Chicago | Standard | — | — | 0.0 | — |
| 60669 | Chicago | Unique | — | — | 0.0 | — |
| 60678 | Chicago | Unique | — | — | 0.0 | — |
| 60668 | Chicago | Unique | — | — | 0.0 | — |
| 60690 | Chicago | PO Box | — | — | 0.0 | — |
| 60674 | Chicago | Unique | — | — | 0.0 | — |
| 60685 | Chicago | Unique | — | — | 0.0 | — |
| 60675 | Chicago | Unique | — | — | 0.0 | — |
| 60691 | Chicago | PO Box | — | — | 0.0 | — |
| 60694 | Chicago | Unique | — | — | 0.0 | — |
| 60689 | Chicago | Unique | — | — | 0.0 | — |
| 60693 | Chicago | Unique | — | — | 0.0 | — |
| 60697 | Chicago | Unique | — | — | 0.0 | — |
| 60696 | Chicago | Unique | — | — | 0.0 | — |
| 60687 | Chicago | Unique | — | — | 0.0 | — |
| 60695 | Chicago | Unique | — | — | 0.0 | — |
| 60677 | Chicago | Unique | — | — | 0.0 | — |
| 60673 | Chicago | Unique | — | — | 0.0 | — |
| 60680 | Chicago | PO Box | — | — | 0.0 | — |
| 60684 | Chicago | Unique | — | — | 0.0 | — |
| 60664 | Chicago | PO Box | — | — | 0.0 | — |
| 60681 | Chicago | PO Box | — | — | 0.0 | — |
| 60303 | Oak Park | PO Box | — | — | 0.0 | — |
| 60161 | Melrose Park | PO Box | — | — | 0.0 | — |
| 60412 | Chicago Heights | PO Box | — | — | 0.0 | — |
| 60499 | Bedford Park | PO Box | — | — | 0.0 | — |
| 60454 | Oak Lawn | PO Box | — | — | 0.0 | — |
| 60670 | Chicago | Unique | — | — | 0.0 | — |
| 60196 | Schaumburg | Unique | — | — | 0.7 | — |
| 60179 | Hoffman Estates | Unique | — | — | 0.1 | — |
| 60006 | Arlington Heights | PO Box | — | — | 0.0 | — |
| 60095 | Palatine | PO Box | — | — | 0.0 | — |
| 60055 | Palatine | Unique | — | — | 0.0 | — |
| 60094 | Palatine | PO Box | — | — | 0.0 | — |
| 60038 | Palatine | Unique | — | — | 0.0 | — |
| 60065 | Northbrook | PO Box | — | — | 0.0 | — |
| 60078 | Palatine | PO Box | — | — | 0.0 | — |
| 60082 | Techny | PO Box | — | — | 0.0 | — |
| 60204 | Evanston | PO Box | — | — | 0.0 | — |
| 60159 | Schaumburg | PO Box | — | — | 0.0 | — |
| 60019 | Des Plaines | Unique | — | — | 0.0 | — |
| 60168 | Schaumburg | PO Box | — | — | 0.0 | — |
| 60017 | Des Plaines | PO Box | — | — | 0.0 | — |
| 60009 | Elk Grove Village | PO Box | — | — | 0.0 | — |
| 60688 | Chicago | Unique | — | — | 0.3 | — |
| 60701 | Chicago | Standard | — | — | 0.0 | — |
| 60666 | Chicago | PO Box | — | — | 9.2 | — |