| ZIP Codes: | 55 ZIP Codes (37 Standard, 18 PO Box, 0 Unique) [See All] |
| Area Codes: | 508 / 774 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:12:27 PM |
| Population: | 233,772 [See All] |
| FIPS: | 25001 |
| CBSA: | Barnstable Town, MA |
| Land Area: | 413 sq mi |
| Water Area: | 99 sq mi |
| Coordinates: | 41.7148, -70.2836 |
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233,772 residents live across 55 ZIPs covering 413 sq mi, served by 52 distinct USPS-recognized cities.
Population moved from 216,950 to 233,772 from 2014 to 2024 — a +7.8% change. 34 ZIPs gained residents, 14 lost.
The county's wealthiest ZIP 02534 (Cataumet, $137,066 median) and poorest ZIP 02601 (Hyannis, $61,143) are 16.2 miles apart — a 2.2× income gap across local geography.
Median home values vary 2.6× across this county — from $440,100 in 02601 (Hyannis) to $1,135,100 in 02650 (North Chatham).
Density varies 8× across the county — from 193 people/sq mi in 02668 (West Barnstable) to 1,583 in 02601 (Hyannis).
Educational attainment ranges from 28.0% bachelor's+ in 02601 (Hyannis) to 72.2% in 02534 (Cataumet) — the breadth of educational profiles across the area.
Within Massachusetts, this is the #9 most populous of 14 counties and ranks #10 for median household income with the #3 fastest decade growth .
Weighted by population, the typical household earns about $99,188 across the county — reflecting what a typical resident sees, not a simple ZIP average.
48.1% of adults age 25+ hold a bachelor's degree or higher (89,354 of 185,655 reporting).
37 Standard delivery, 18 PO Box only, 0 single-entity Unique ZIPs serve this county.
9 ZIPs in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 02536 | East Falmouth | Standard | 21,328 | $100,497 | 29.0 | 11.9% |
| 02601 | Hyannis | Standard | 16,071 | $61,143 | 10.1 | 12.8% |
| 02649 | Mashpee | Standard | 15,384 | $95,299 | 24.8 | 10.0% |
| 02532 | Buzzards Bay | Standard | 13,267 | $87,773 | 23.9 | 11.9% |
| 02632 | Centerville | Standard | 11,685 | $121,317 | 8.5 | 3.5% |
| 02645 | Harwich | Standard | 11,288 | $104,401 | 18.5 | 16.8% |
| 02563 | Sandwich | Standard | 10,436 | $121,455 | 16.3 | 4.7% |
| 02631 | Brewster | Standard | 10,061 | $102,132 | 24.8 | 3.3% |
| 02664 | South Yarmouth | Standard | 9,949 | $82,125 | 7.6 | 6.5% |
| 02673 | West Yarmouth | Standard | 8,594 | $73,854 | 9.7 | 0.2% |
| 02540 | Falmouth | Standard | 8,104 | $77,295 | 11.1 | -7.0% |
| 02648 | Marstons Mills | Standard | 7,968 | $129,681 | 10.8 | 23.5% |
| 02675 | Yarmouth Port | Standard | 7,297 | $110,450 | 10.0 | 15.0% |
| 02653 | Orleans | Standard | 6,443 | $102,813 | 15.4 | 7.8% |
| 02537 | East Sandwich | Standard | 6,383 | $136,506 | 14.1 | 1.3% |
| 02660 | South Dennis | Standard | 6,381 | $93,386 | 8.7 | -0.2% |
| 02642 | Eastham | Standard | 5,811 | $72,992 | 14.4 | 18.5% |
| 02633 | Chatham | Standard | 4,512 | $85,483 | 8.9 | 17.3% |
| 02655 | Osterville | Standard | 4,024 | $118,750 | 6.6 | 11.3% |
| 02667 | Wellfleet | Standard | 3,961 | $121,110 | 19.2 | 35.3% |
| 02639 | Dennis Port | Standard | 3,808 | $72,567 | 3.1 | 41.1% |
| 02657 | Provincetown | Standard | 3,703 | $136,904 | 10.1 | 25.1% |
| 02644 | Forestdale | Standard | 3,700 | $108,158 | 9.1 | -13.1% |
| 02635 | Cotuit | Standard | 3,577 | $110,197 | 5.8 | 9.0% |
| 02562 | Sagamore Beach | Standard | 3,402 | $120,000 | 2.5 | 8.8% |
| 02638 | Dennis | Standard | 3,253 | $108,726 | 5.9 | -8.5% |
| 02556 | North Falmouth | Standard | 2,868 | $121,810 | 4.2 | -5.1% |
| 02668 | West Barnstable | Standard | 2,820 | $111,731 | 14.6 | 4.1% |
| 02559 | Pocasset | Standard | 2,802 | $90,855 | 6.0 | -32.9% |
| 02630 | Barnstable | Standard | 2,371 | $116,895 | 5.2 | 4.7% |
| 02646 | Harwich Port | Standard | 1,846 | $81,172 | 3.0 | 3.6% |
| 02534 | Cataumet | PO Box | 1,369 | $137,066 | 2.6 | 38.6% |
| 02659 | South Chatham | Standard | 1,137 | $109,453 | 2.1 | 41.1% |
| 02670 | West Dennis | Standard | 1,087 | $87,019 | 2.8 | -12.6% |
| 02650 | North Chatham | Standard | 1,032 | $66,548 | 1.5 | -13.3% |
| 02542 | Buzzards Bay | Standard | 882 | $62,083 | 12.8 | -17.5% |
| 02666 | Truro | PO Box | 863 | $121,750 | 21.6 | 16.2% |
| 02652 | North Truro | PO Box | 845 | — | 0.0 | -15.1% |
| 02671 | West Harwich | Standard | 818 | $104,583 | 1.8 | 8.3% |
| 02543 | Woods Hole | Standard | 747 | $72,349 | 2.6 | -7.3% |
| 02561 | Sagamore | PO Box | 670 | — | 1.9 | 35.1% |
| 02663 | South Wellfleet | PO Box | 443 | $83,587 | 0.0 | 433.7% |
| 02641 | East Dennis | PO Box | 316 | — | 1.6 | 42.3% |
| 02637 | Cummaquid | PO Box | 227 | — | 0.0 | 328.3% |
| 02647 | Hyannis Port | PO Box | 209 | — | 0.0 | 93.5% |
| 02553 | Monument Beach | PO Box | 30 | — | 0.0 | -84.3% |
| 02643 | East Orleans | PO Box | 0 | — | 0.0 | -100.0% |
| 02672 | West Hyannisport | PO Box | 0 | — | 0.2 | -100.0% |
| 02634 | Centerville | PO Box | — | — | 0.0 | — |
| 02541 | Falmouth | PO Box | — | — | 0.0 | — |
| 02574 | West Falmouth | PO Box | — | — | 0.0 | — |
| 02669 | West Chatham | PO Box | — | — | 0.0 | — |
| 02661 | South Harwich | PO Box | — | — | 0.0 | — |
| 02651 | North Eastham | PO Box | — | — | 0.0 | — |
| 02662 | South Orleans | PO Box | — | — | 0.0 | — |