Census-designated place · Massachusetts
South Yarmouth, Massachusetts
South Yarmouth, census-designated place, in Barnstable County, Massachusetts. South Yarmouth had 11,552 people in the ACS 2020-2024 5-year estimates (±765). GEOID 2566035.
Residents, 2020-2024
11,552
±765 (90% margin)
2020 Census count: 11,703
Median household income
$82,188
±$8,277 (90% margin)
Massachusetts: $103,960
Median home value
$541,700
±$29,838 (90% margin)
Massachusetts: $562,100
Median gross rent
$1,806
±$242 (90% margin)
Massachusetts: $1,762
Where is South Yarmouth and what county is it in?
South Yarmouth is a census-designated place: an unincorporated community the Census Bureau draws for counting, with no city government of its own, in Barnstable County, Massachusetts. It covers 7.0 square miles of land, 1,682 residents per square mile in 2020.
South Yarmouth is in the Barnstable Town, MA metropolitan statistical area (Census Bureau delineation, July 2023).
South Yarmouth lies entirely within Yarmouth, a town with its own local government (2020 census blocks).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in South Yarmouth, and is it growing?
The 2020-2024 American Community Survey puts South Yarmouth's population at 11,552 (±765). The 2020 Census counted 11,703 residents.
The Census Bureau publishes yearly population estimates for incorporated places only; South Yarmouth is a census-designated place, so its figures come from the ACS and the 2020 Census.
| Measure | South Yarmouth | Barnstable County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 11,552 ±765 | 231,668 | no clear change |
| Households | 5,394 ±407 | 105,777 | +525 |
| Average household size | 2.10 ±0.12 | 2.16 | no clear change |
| Housing units | 8,266 ±373 | 166,215 | +495 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in South Yarmouth?
The median resident of South Yarmouth is 52.4 years old; 13.5% are under 18 and 32.3% are 65 or older. The largest group is non-Hispanic white residents at 76.5%, then non-Hispanic residents of two or more races at 7.6%. 18.9% of residents were born outside the United States.
| Measure | South Yarmouth | Barnstable County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 52.4 ±2.7 | 55.4 | no clear change |
| Under 18 years | 13.5% ±2.0 pts | 14.1% | – |
| 65 years and over | 32.3% ±3.7 pts | 33.1% | – |
| Male | 47.6% ±2.4 pts | 48.1% | – |
| Hispanic or Latino (any race) | 2.6% ±2.4 pts | 3.7% | – |
| White alone, not Hispanic | 76.5% ±5.2 pts | 85.2% | −12.8 pts |
| Black or African American alone, not Hispanic | 7.3% ±3.8 pts | 2.8% | – |
| Asian alone, not Hispanic | 4.2% ±2.3 pts | 1.5% | no clear change |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.4 pts | 0.3% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.4 pts | 0.0% | – |
| Two or more races, not Hispanic | 7.6% ±4.7 pts | 5.2% | – |
| Some other race alone, not Hispanic | 1.9% ±1.6 pts | 1.3% | – |
| Born outside the United States | 18.9% ±5.4 pts | 9.9% | +9.4 pts |
| Speak a language other than English at home (age 5+) | 19.0% ±6.7 pts | 10.8% | – |
| Civilian veterans (age 18+) | 5.4% ±1.7 pts | 7.1% | – |
| With a disability | 17.1% ±3.2 pts | 14.8% | – |
| No health insurance coverage | 3.8% ±2.2 pts | 2.7% | no clear change |
| High school graduate or higher (age 25+) | 94.1% ±2.0 pts | 96.2% | – |
| Bachelor's degree or higher (age 25+) | 34.4% ±4.4 pts | 48.2% | +5.6 pts |
| Graduate or professional degree (age 25+) | 14.4% ±2.5 pts | 22.4% | – |
| Lived in the same house a year earlier | 90.4% ±3.4 pts | 90.8% | – |
| Moved from another state in the past year | 1.2% ±0.9 pts | 2.7% | – |
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 South Yarmouth earn?
Half of South Yarmouth's 5,394 households earn less than $82,188 a year (±$8,277), against $95,241 in Barnstable County and $103,960 in Massachusetts. In 2015-2019 it was $75,181 in 2024 dollars; the margins of error cannot tell the two periods apart. 11.6% of residents live below the poverty line.
| Measure | South Yarmouth | Barnstable County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $82,188 ±$8,277 | $95,241 | no clear change |
| Mean household income | $107,916 ±$10,979 | $134,349 | – |
| Per capita income | $52,328 ±$5,521 | $62,086 | +$10,412 |
| People below the poverty line | 11.6% ±5.1 pts | 7.7% | no clear change |
| Children under 18 below the poverty line | 15.7% ±9.6 pts | 9.1% | – |
| Households receiving SNAP | 12.4% ±3.8 pts | 9.4% | – |
| Households with a computer | 95.5% ±2.3 pts | 96.5% | – |
| Households with a broadband subscription | 95.8% ±2.0 pts | 94.3% | – |
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 South Yarmouth?
Owners occupy 80.2% of South Yarmouth's occupied homes and renters 19.8%. The median owner-occupied home is valued at $541,700 by its owner (±$29,838). The median renter pays $1,806 a month including utilities, and 61.8% of renters pay 35% or more of their income on rent.
| Measure | South Yarmouth | Barnstable County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $541,700 ±$29,838 | $629,000 | +$136,063 |
| Median gross rent | $1,806 ±$242 | $1,678 | no clear change |
| Renters paying 35% or more of income on rent | 61.8% ±13.5 pts | 48.8% | no clear change |
| Median monthly owner costs, with a mortgage | $2,077 ±$124 | $2,432 | – |
| Owner-occupied homes | 80.2% ±4.8 pts | 81.1% | +6.9 pts |
| Renter-occupied homes | 19.8% ±4.8 pts | 18.9% | – |
| Housing units | 8,266 ±373 | 166,215 | +495 |
| Homeowner vacancy rate | 0.0% ±1.0 pts | 1.0% | – |
| Rental vacancy rate | 10.6% ±8.2 pts | 4.7% | – |
| Single-family detached homes | 84.2% ±3.5 pts | 81.6% | – |
| Mobile homes | 0.2% ±0.3 pts | 0.8% | – |
| Built 2020 or later | 0.0% ±0.5 pts | 0.8% | – |
| Built 2010 to 2019 | 2.2% ±1.2 pts | 4.1% | – |
| Built 1939 or earlier | 9.0% ±2.6 pts | 11.4% | – |
| Households with no vehicle | 6.4% ±2.7 pts | 5.4% | – |
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 do people in South Yarmouth work and get to work?
79.5% of South Yarmouth's workers drive alone and 6.0% work from home. The average trip to work takes 23.8 minutes. The unemployment rate in 2020-2024 averaged 6.1%.
| Measure | South Yarmouth | Barnstable County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 59.0% ±5.2 pts | 58.3% | – |
| Unemployment rate | 6.1% ±3.6 pts | 5.0% | no clear change |
| Drove alone to work | 79.5% ±7.7 pts | 72.1% | – |
| Carpooled | 7.0% ±5.3 pts | 7.0% | – |
| Public transportation | 2.9% ±1.5 pts | 1.2% | – |
| Walked | 0.0% ±0.8 pts | 1.9% | – |
| Worked from home | 6.0% ±2.7 pts | 16.0% | no clear change |
| Mean travel time to work | 23.8 min ±6.4 | 24.8 min | no clear change |
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 census tracts are in South Yarmouth?
2 census tracts lie mostly in South Yarmouth, and 1 more reaches into it (2020 census blocks). Their median household incomes run from $69,115 (Tract 120.02) to $82,385 (Tract 120.01).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 120.01Barnstable County | 6,216 | $82,385 |
| Tract 120.02Barnstable County | 3,020 | $69,115 |
| Tract 121.01Barnstable County | 5,418 | $87,125 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in South Yarmouth) · Census block assignment files
How does South Yarmouth compare with other places in Massachusetts?
South Yarmouth ranks 364th of 453 places in Massachusetts with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population (ACS 2020-2024) | 170th | 460 |
| Residents per square mile | 110th | 461 |
| Median household income | 364th | 453 |
| Per capita income | 283rd | 460 |
| Median home value | 214th | 459 |
| Median gross rent | 137th | 410 |
| Poverty rate | 57th | 338 |
| Bachelor's degree or higher | 354th | 459 |
| Median age | 85th | 461 |
| Owner-occupied share | 228th | 460 |
| Work from home | 420th | 429 |
| Travel time to work | 379th | 459 |
South Yarmouth's figures with every place in Massachusetts (CSV)
Every place in Massachusetts, sortable · Compare South Yarmouth with other places
Source: PlainCities ranks computed 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 reliable are the figures for South Yarmouth?
11 of the 57 figures for South Yarmouth on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
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 South Yarmouth 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.