| ZIP Codes: | 60 ZIP Codes (30 Standard, 25 PO Box, 5 Unique) [See All] |
| Area Codes: | 339 / 508 / 617 / 774 / 781 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 11:53:45 PM |
| Population: | 532,979 [See All] |
| FIPS: | 25023 |
| CBSA: | Boston-Cambridge-Newton, MA-NH |
| Land Area: | 693 sq mi |
| Water Area: | 84 sq mi |
| Coordinates: | 42.0144, -70.8197 |
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532,979 residents live across 60 ZIPs covering 693 sq mi, served by 48 distinct USPS-recognized cities.
Population moved from 498,694 to 530,039 from 2014 to 2024 — a +6.3% change. 30 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 02339 (Hanover, $189,803 median) and poorest ZIP 02576 (West Wareham, $63,021) are 24.1 miles apart — a 3.0× income gap across local geography.
Median home values vary 2.9× across this county — from $387,200 in 02576 (West Wareham) to $1,134,200 in 02043 (Hingham).
Density varies 114× across the county — from 167 people/sq mi in 02770 (Rochester) to 19,055 in 02325 (Bridgewater).
Educational attainment ranges from 20.0% bachelor's+ in 02558 (Onset) to 76.2% in 02043 (Hingham) — the breadth of educational profiles across the area.
Within Massachusetts, this is the #7 most populous of 14 counties and ranks #6 for median household income with the #7 fastest decade growth .
On the national stage, Plymouth County is ranks #79 for income .
Hosts 4 single-entity Unique ZIPs: 02325Bridgewater State College ; 02348Middleborough ; 02349Middleborough ; and 02344Aetna Life & Casualty Co .
Weighted by population, the typical household earns about $119,139 across the county — reflecting what a typical resident sees, not a simple ZIP average.
41.8% of adults age 25+ hold a bachelor's degree or higher (158,339 of 378,396 reporting).
30 Standard delivery, 25 PO Box only, 5 single-entity Unique ZIPs serve this county.
5 ZIPs in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
5 ZIP codes in this county serve a single facility — typically theme parks, universities, large corporations, airports, or government complexes.
Median household income spans 3.0× 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 |
|---|---|---|---|---|---|---|
| 02301 | Brockton | Standard | 68,969 | $74,214 | 13.0 | 16.4% |
| 02360 | Plymouth | Standard | 63,689 | $116,941 | 95.4 | 11.2% |
| 02302 | Brockton | Standard | 36,417 | $92,274 | 8.7 | 4.1% |
| 02050 | Marshfield | Standard | 25,963 | $126,241 | 30.1 | 1.6% |
| 02324 | Bridgewater | Standard | 25,704 | $112,726 | 28.0 | -4.6% |
| 02346 | Middleboro | Standard | 24,505 | $97,056 | 72.1 | 4.1% |
| 02043 | Hingham | Standard | 24,283 | $178,390 | 22.3 | 7.7% |
| 02066 | Scituate | Standard | 19,099 | $136,689 | 18.6 | 6.1% |
| 02359 | Pembroke | Standard | 18,382 | $146,285 | 23.7 | 2.1% |
| 02370 | Rockland | Standard | 17,701 | $112,405 | 10.1 | 0.5% |
| 02351 | Abington | Standard | 17,053 | $125,400 | 10.4 | 6.0% |
| 02332 | Duxbury | Standard | 16,185 | $176,583 | 25.2 | 6.4% |
| 02382 | Whitman | Standard | 15,295 | $108,933 | 7.0 | 4.5% |
| 02339 | Hanover | Standard | 14,845 | $189,803 | 15.7 | 5.1% |
| 02333 | East Bridgewater | Standard | 14,401 | $133,741 | 17.5 | 2.9% |
| 02364 | Kingston | Standard | 14,027 | $119,876 | 19.1 | 9.2% |
| 02347 | Lakeville | Standard | 11,944 | $133,984 | 36.1 | 9.2% |
| 02330 | Carver | Standard | 11,712 | $91,250 | 44.3 | 1.5% |
| 02061 | Norwell | Standard | 11,361 | $188,699 | 21.3 | 6.7% |
| 02571 | Wareham | Standard | 11,258 | $94,265 | 23.2 | 7.3% |
| 02341 | Hanson | Standard | 10,542 | $132,250 | 15.6 | 2.2% |
| 02045 | Hull | Standard | 10,138 | $115,485 | 4.1 | -1.8% |
| 02338 | Halifax | Standard | 7,748 | $118,556 | 17.4 | 1.6% |
| 02379 | West Bridgewater | Standard | 7,708 | $123,406 | 14.6 | 10.4% |
| 02739 | Mattapoisett | Standard | 6,634 | $130,241 | 17.4 | 8.1% |
| 02770 | Rochester | Standard | 5,809 | $120,320 | 34.8 | 12.5% |
| 02738 | Marion | Standard | 5,310 | $143,092 | 14.4 | 7.6% |
| 02576 | West Wareham | Standard | 4,168 | $63,021 | 9.3 | -17.2% |
| 02538 | East Wareham | Standard | 4,074 | $123,750 | 7.2 | 23.7% |
| 02367 | Plympton | Standard | 2,935 | $126,736 | 15.0 | 3.3% |
| 02325 | Bridgewater | Unique | 2,822 | — | 0.1 | — |
| 02558 | Onset | PO Box | 1,734 | $79,598 | 1.3 | 12.7% |
| 02366 | South Carver | PO Box | 264 | — | 0.0 | 89.9% |
| 02047 | Humarock | PO Box | 182 | $106,333 | 0.0 | 45.6% |
| 02350 | Monponsett | PO Box | 118 | — | 0.0 | — |
| 02331 | Duxbury | PO Box | — | — | 0.0 | — |
| 02327 | Bryantville | PO Box | — | — | 0.0 | — |
| 02304 | Brockton | PO Box | — | — | 0.0 | — |
| 02337 | Elmwood | PO Box | — | — | 0.0 | — |
| 02362 | Plymouth | PO Box | — | — | 0.0 | — |
| 02348 | Lakeville | Unique | — | — | 0.0 | — |
| 02349 | Middleboro | Unique | — | — | 0.0 | — |
| 02344 | Middleboro | Unique | — | — | 0.0 | — |
| 02345 | Manomet | PO Box | — | — | 0.0 | — |
| 02355 | North Carver | PO Box | — | — | 0.0 | — |
| 02381 | White Horse Beach | PO Box | — | — | 0.0 | — |
| 02361 | Plymouth | PO Box | — | — | 0.0 | — |
| 02059 | North Marshfield | PO Box | — | — | 0.0 | — |
| 02051 | Marshfield Hills | PO Box | — | — | 0.0 | — |
| 02303 | Brockton | PO Box | — | — | 0.0 | — |
| 02020 | Brant Rock | PO Box | — | — | 0.3 | — |
| 02041 | Green Harbor | PO Box | — | — | 0.0 | — |
| 02358 | North Pembroke | PO Box | — | — | 0.0 | — |
| 02065 | Ocean Bluff | PO Box | — | — | 0.0 | — |
| 02305 | Brockton | PO Box | — | — | 0.0 | — |
| 02040 | Greenbush | PO Box | — | — | 0.0 | — |
| 02055 | Minot | PO Box | — | — | 0.0 | — |
| 02060 | North Scituate | PO Box | — | — | 0.0 | — |
| 02018 | Accord | PO Box | — | — | 0.0 | — |
| 02044 | Hingham | Unique | — | — | 0.0 | — |