County · Massachusetts
Plymouth County, Massachusetts
Plymouth County, Massachusetts. Plymouth County had 546,829 residents in 2025 by the Census Bureau's estimate, up 3.0% since 2020, faster than Massachusetts (+1.7%). It holds 52 places (2 cities, villages and boroughs, 23 towns and townships and 27 census-designated) and 111 census tracts. GEOID 25023.
Plymouth County is one of the 7 counties of the Boston-Cambridge-Newton, MA-NH metropolitan statistical area (the Census Bureau's July 2023 delineation).
Residents, July 2025 estimate
546,829
Census Bureau estimate (no margin published)
2020 Census count: 530,819 · ACS 2020-2024: 535,075
Median household income
$114,201
±$1,841 (90% margin)
Massachusetts: $103,960
Median home value
$556,000
±$6,716 (90% margin)
Massachusetts: $562,100
Median gross rent
$1,747
±$38 (90% margin)
Massachusetts: $1,762
How many people live in Plymouth County, and is it growing?
The 2020 Census counted 530,819 residents in Plymouth County. The Census Bureau estimates 546,829 for July 1, 2025, up 3.0% since 2020, faster than Massachusetts (+1.7%). The 2020-2024 American Community Survey puts the population at 535,075 over 659 square miles of land.
| Measure | Plymouth County | Massachusetts | Change since 2015-2019 |
|---|---|---|---|
| Total population | 535,075 | 7,044,056 | +19,772 |
| Households | 203,141±1,022 | 2,785,042 | +15,681 |
| Average household size | 2.58±0.01 | 2.44 | −0.11 |
| Housing units | 218,096±140 | 3,030,406 | +11,093 |
Plymouth County's population since 2000
From 472,822 in 2000 to 546,829 in 2025: up 15.7%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Plymouth County?
Plymouth County holds 52 places: 2 cities, villages and boroughs (incorporated places), 23 towns and townships (county subdivisions with their own government) and 27 census-designated places. The largest is Brockton with 106,134 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Brockton | 105,643 | $80,115 |
|---|---|---|
| Plymouth | 61,217 | $116,941 |
| Bridgewater Town | 28,633 | $112,651 |
| Marshfield | 25,825 | $125,986 |
| Hingham | 24,284 | $178,390 |
| Middleborough | 24,245 | $97,056 |
| Wareham | 23,303 | $90,383 |
| Scituate | 19,063 | $136,732 |
| Pembroke | 18,361 | $146,285 |
| Rockland | 17,803 | $112,405 |
| Abington | 17,062 | $125,400 |
| Duxbury | 16,090 | $176,583 |
| Whitman | 15,121 | $108,933 |
| Hanover | 14,833 | $189,803 |
| East Bridgewater | 14,440 | $133,853 |
| Kingston | 13,708 | $119,876 |
| Carver | 11,645 | $91,250 |
| Lakeville | 11,523 | $133,984 |
| Norwell | 11,351 | $188,699 |
| Hanson | 10,639 | $132,200 |
| Hull | 10,072 | $115,485 |
| Middleborough Center | 7,921 | $97,616 |
| Halifax | 7,749 | $118,556 |
| West Bridgewater | 7,707 | $123,406 |
| Plymouth CDP | 7,667 | $81,703 |
| Mattapoisett | 6,508 | $130,241 |
| Hingham CDP | 5,979 | $205,769 |
| Rochester | 5,717 | $120,273 |
| Kingston CDP | 5,700 | $150,886 |
| Scituate CDP | 5,620 | $124,549 |
| North Scituate | 5,414 | $140,329 |
| Marion | 5,347 | $143,092 |
| Ocean Bluff-Brant Rock | 4,744 | $119,310 |
| Marshfield CDP | 4,653 | $97,105 |
| The Pinehills | 4,515 | $122,798 |
| North Plymouth | 3,983 | $80,745 |
| North Pembroke | 3,490 | $194,309 |
| South Duxbury | 3,463 | $212,734 |
| North Lakeville | 3,290 | $106,713 |
| Mattapoisett Center | 3,190 | $105,500 |
| Wareham Center | 2,972 | $91,936 |
| Plympton | 2,930 | $126,736 |
| Marshfield HillsGEOID 2538960 | 2,491 | $216,250 |
| Cedar CrestGEOID 2511945 | 2,230 | $168,721 |
| West Wareham | 2,224 | $58,560 |
| White Island ShoresGEOID 2579390 | 2,180 | $106,667 |
| WeweanticGEOID 2578850 | 2,109 | $62,481 |
| Hanson CDPGEOID 2528460 | 2,028 | $119,211 |
| Duxbury CDPGEOID 2517860 | 1,896 | $126,694 |
| OnsetGEOID 2551160 | 1,617 | $137,997 |
| Marion CenterGEOID 2538575 | 1,172 | $150,700 |
| Green HarborGEOID 2527130 | 394 | $203,159 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Plymouth County?
The median resident of Plymouth County is 43.0 years old; 20.7% are under 18 and 19.8% are 65 or older. The largest group is non-Hispanic white residents at 76.1%, then non-Hispanic Black residents at 7.8%. 11.2% of residents were born outside the United States.
| Measure | Plymouth County | Massachusetts | Change since 2015-2019 |
|---|---|---|---|
| Median age | 43.0±0.2 | 40.0 | +0.3 |
| Under 18 years | 20.7%±0.1 pts | 19.4% | – |
| 65 years and over | 19.8%±0.1 pts | 17.9% | – |
| Hispanic or Latino (any race) | 4.9% | 13.3% | +1.0 pts |
| White alone, not Hispanic | 76.1%±0.5 pts | 66.6% | −4.5 pts |
| Black or African American alone, not Hispanic | 7.8%±0.4 pts | 6.4% | −1.8 pts |
| Asian alone, not Hispanic | 1.7%±0.1 pts | 7.3% | +0.3 pts |
| American Indian and Alaska Native alone, not Hispanic | 0.1%±0.1 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 6.8%±0.5 pts | 5.1% | – |
| Some other race alone, not Hispanic | 2.7%±0.4 pts | 1.2% | – |
| Born outside the United States | 11.2%±0.5 pts | 18.0% | +1.7 pts |
| Speak a language other than English at home (age 5+) | 14.7%±0.6 pts | 25.1% | – |
| Civilian veterans (age 18+) | 5.7%±0.3 pts | 4.3% | – |
| With a disability | 11.8%±0.4 pts | 12.3% | – |
| No health insurance coverage | 2.5%±0.3 pts | 2.6% | no clear change |
| High school graduate or higher (age 25+) | 93.1%±0.4 pts | 91.4% | – |
| Bachelor's degree or higher (age 25+) | 41.8%±0.7 pts | 47.3% | +4.2 pts |
| Graduate or professional degree (age 25+) | 16.1%±0.5 pts | 21.8% | – |
| Moved from another state in the past year | 0.7%±0.1 pts | 2.2% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Plymouth County earn?
Half of Plymouth County's 203,141 households earn less than $114,201 a year (±$1,841), against $103,960 in Massachusetts. In 2015-2019 the median was $110,134 in 2024 dollars, so it rose by $4,067 after inflation. 7.1% of residents live below the poverty line.
| Measure | Plymouth County | Massachusetts | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $114,201±$1,841 | $103,960 | +$4,067 |
| Mean household income | $151,136±$2,563 | $144,950 | – |
| Per capita income | $57,650±$958 | $57,897 | +$4,223 |
| People below the poverty line | 7.1%±0.5 pts | 10.0% | no clear change |
| Children under 18 below the poverty line | 7.5%±1.1 pts | 11.7% | −1.8 pts |
| Households receiving SNAP | 12.7%±0.6 pts | 14.7% | – |
| Households with a broadband subscription | 92.9%±0.6 pts | 92.8% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Plymouth County?
Owners occupy 77.6% of Plymouth County's occupied homes and renters 22.4%. The median owner-occupied home is valued at $556,000 by its owner (±$6,716). The median renter pays $1,747 a month including utilities, and 45.4% of renters pay 35% or more of their income on rent.
| Measure | Plymouth County | Massachusetts | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $556,000±$6,716 | $562,100 | +$100,274 |
| Median gross rent | $1,747±$38 | $1,762 | +$173 |
| Renters paying 35% or more of income on rent | 45.4%±2.6 pts | 41.8% | no clear change |
| Median monthly owner costs, with a mortgage | $2,799±$29 | $2,726 | – |
| Owner-occupied homes | 77.6%±0.7 pts | 62.5% | +1.1 pts |
| Housing units | 218,096±140 | 3,030,406 | +11,093 |
| Homeowner vacancy rate | 0.4%±0.1 pts | 0.6% | – |
| Rental vacancy rate | 2.0%±0.6 pts | 3.5% | – |
| Single-family detached homes | 69.6%±0.8 pts | 51.1% | – |
| Mobile homes | 2.3%±0.2 pts | 0.8% | – |
| Built 2020 or later | 1.6%±0.2 pts | 1.0% | – |
| Built 1939 or earlier | 21.2%±0.8 pts | 30.5% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Plymouth County building?
Builders took permits for 931 new housing units across Plymouth County in 2025 (788 single-family), 1.7 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Plymouth County get to work?
70.5% of Plymouth County's workers drive alone and 16.2% work from home. The average trip to work takes 32.5 minutes. The unemployment rate in 2020-2024 averaged 5.1%.
| Measure | Plymouth County | Massachusetts | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 66.7%±0.6 pts | 67.0% | – |
| Unemployment rate | 5.1%±0.3 pts | 5.2% | no clear change |
| Drove alone to work | 70.5%±0.9 pts | 61.2% | – |
| Carpooled | 7.0%±0.5 pts | 7.0% | – |
| Public transportation | 2.9%±0.3 pts | 6.5% | – |
| Walked | 1.5%±0.2 pts | 4.1% | – |
| Worked from home | 16.2%±0.6 pts | 18.6% | +11.3 pts |
| Mean travel time to work | 32.5 min±0.5 | 29.1 min | −1.3 min |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What are Plymouth County's census tracts?
Plymouth County is divided into 111 census tracts. Among those with a reliable estimate, median household income runs from $26,109 (Tract 5109) to $242,768 (Tract 5012.01).
All 111 census tracts of Plymouth County, with their figures
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Plymouth County compare with Massachusetts's other counties?
| Measure | Rank |
|---|---|
| Population | 7th of 14 |
| Growth 2020-2025 | 4th of 14 |
| Residents per square mile | 6th of 14 |
| Median household income | 5th of 14 |
| Median home value | 8th of 14 |
| Median gross rent | 6th of 14 |
| Poverty rate | 11th of 14 |
| Bachelor's degree or higher | 9th of 14 |
| Median age | 5th of 14 |
Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Plymouth County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.