Town · New Hampshire
Plymouth, New Hampshire
Plymouth, town, in Grafton County, New Hampshire. Plymouth had 6,721 residents on July 1, 2025 by the Census Bureau's estimate, up 0.4% since 2020; the 2020 Census counted 6,682 and the ACS 2020-2024 5-year estimates put it at 6,601 (±28). GEOID 3300962660.
Residents, July 2025 estimate
6,721
Census Bureau estimate (no margin published)
2020 Census count: 6,682 · ACS 2020-2024: 6,601 ±28
Median household income
$77,027
±$26,219 (90% margin)
New Hampshire: $99,031
Median home value
$292,400
±$22,184 (90% margin)
New Hampshire: $402,500
Median gross rent
$1,108
±$255 (90% margin)
New Hampshire: $1,491
Where is Plymouth and what county is it in?
Plymouth is a town in Grafton County, New Hampshire. It covers 28.1 square miles of land, 238 residents per square mile in 2020.
One place lies inside Plymouth: Plymouth (CDP, 4,730 in 2020).
Plymouth is in the Lebanon-Claremont, NH-VT micropolitan statistical area, which takes in 4 counties (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Plymouth, and is it growing?
The Census Bureau estimates that 6,721 people lived in Plymouth on July 1, 2025, up 0.4% since 2020, slower than New Hampshire (+2.7%). The 2020 Census counted 6,682 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 6,601 (±28).
| Measure | Plymouth | Grafton County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 6,601±28 | 92,120 | −154 |
| Households | 1,930±243 | 37,107 | no clear change |
| Average household size | 2.58±0.32 | 2.29 | no clear change |
| Housing units | 2,326±281 | 51,920 | −572 |
Plymouth's population since 2000
From 5,892 in 2000 to 6,721 in 2025: up 14.1%. The 2000, 2010 and 2020 figures are census counts, each for Plymouth as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. 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); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Plymouth?
The median resident of Plymouth is 24.6 years old; 13.6% are under 18 and 12.0% are 65 or older. The largest group is non-Hispanic white residents at 87.5%, then non-Hispanic residents of two or more races at 5.3%. 3.7% of residents were born outside the United States.
| Measure | Plymouth | Grafton County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 24.6±3.4 | 44.1 | −9.6 |
| Under 18 years | 13.6%±3.6 pts | 15.6% | – |
| 65 years and over | 12.0%±3.2 pts | 23.0% | – |
| Male | 53.5%±3.3 pts | 49.6% | – |
| Hispanic or Latino (any race) | 3.2%±1.9 pts | 2.9% | – |
| White alone, not Hispanic | 87.5%±3.8 pts | 87.5% | no clear change |
| Black or African American alone, not Hispanic | 3.0%±2.3 pts | 1.1% | – |
| Asian alone, not Hispanic | 1.1%±0.8 pts | 3.5% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±0.5 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.5 pts | 0.0% | – |
| Two or more races, not Hispanic | 5.3%±2.5 pts | 4.4% | – |
| Some other race alone, not Hispanic | 0.0%±0.5 pts | 0.5% | – |
| Born outside the United States | 3.7%±1.9 pts | 5.6% | – |
| Speak a language other than English at home (age 5+) | 4.7%±2.3 pts | 6.2% | – |
| Civilian veterans (age 18+) | 2.2%±1.0 pts | 7.2% | – |
| With a disability | 12.8%±3.3 pts | 14.0% | – |
| No health insurance coverage | 7.3%±4.9 pts | 5.4% | – |
| High school graduate or higher (age 25+) | 94.8%±3.3 pts | 94.7% | – |
| Bachelor's degree or higher (age 25+) | 54.0%±7.0 pts | 46.7% | +16.0 pts |
| Graduate or professional degree (age 25+) | 24.2%±5.1 pts | 24.5% | – |
| Lived in the same house a year earlier | 79.4%±5.0 pts | 86.8% | – |
| Moved from another state in the past year | 10.7%±3.6 pts | 6.4% | – |
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 earn?
Half of Plymouth's 1,930 households earn less than $77,027 a year (±$26,219), against $88,261 in Grafton County and $99,031 in New Hampshire. In 2015-2019 it was $66,238 in 2024 dollars; the margins of error cannot tell the two periods apart. 18.6% of residents live below the poverty line.
| Measure | Plymouth | Grafton County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $77,027±$26,219 | $88,261 | no clear change |
| Mean household income | $106,751±$15,807 | $125,563 | – |
| Per capita income | $33,931±$4,023 | $52,790 | no clear change |
| People below the poverty line | 18.6%±5.7 pts | 10.4% | no clear change |
| Children under 18 below the poverty line | 15.0%±12.1 pts | 10.8% | – |
| Households receiving SNAP | 13.0%±6.6 pts | 6.4% | – |
| Households with a computer | 97.5%±3.2 pts | 95.2% | – |
| Households with a broadband subscription | 85.3%±6.2 pts | 90.3% | – |
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 Plymouth?
Owners occupy 56.3% of Plymouth's occupied homes and renters 43.7%. The median owner-occupied home is valued at $292,400 by its owner (±$22,184). The median renter pays $1,108 a month including utilities, and 25.4% of renters pay 35% or more of their income on rent.
| Measure | Plymouth | Grafton County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $292,400±$22,184 | $344,500 | +$67,798 |
| Median gross rent | $1,108±$255 | $1,301 | no clear change |
| Renters paying 35% or more of income on rent | 25.4%±13.4 pts | 36.9% | no clear change |
| Median monthly owner costs, with a mortgage | $2,175±$176 | $2,070 | – |
| Owner-occupied homes | 56.3%±9.2 pts | 71.3% | no clear change |
| Renter-occupied homes | 43.7%±9.2 pts | 28.7% | – |
| Housing units | 2,326±281 | 51,920 | −572 |
| Homeowner vacancy rate | 0.0%±3.2 pts | 0.7% | – |
| Rental vacancy rate | 0.0%±4.1 pts | 4.8% | – |
| Single-family detached homes | 44.6%±7.8 pts | 61.4% | – |
| Mobile homes | 5.9%±2.3 pts | 7.2% | – |
| Built 2020 or later | 2.9%±2.8 pts | 1.5% | – |
| Built 2010 to 2019 | 3.7%±2.6 pts | 5.9% | – |
| Built 1939 or earlier | 21.6%±7.3 pts | 20.2% | – |
| Households with no vehicle | 14.5%±7.5 pts | 6.3% | – |
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 building?
Builders took permits for 13 new housing units in Plymouth in 2025 (5 in single-family houses), 1.9 per 1,000 residents against 3.6 across New Hampshire.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Plymouth work and get to work?
57.5% of Plymouth's workers drive alone and 11.7% work from home. The average trip to work takes 18.4 minutes. The unemployment rate in 2020-2024 averaged 5.6%.
| Measure | Plymouth | Grafton County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 63.9%±5.2 pts | 60.5% | – |
| Unemployment rate | 5.6%±2.5 pts | 3.2% | no clear change |
| Drove alone to work | 57.5%±6.4 pts | 67.1% | – |
| Carpooled | 14.9%±6.9 pts | 8.6% | – |
| Public transportation | 0.0%±1.0 pts | 0.5% | – |
| Walked | 12.0%±4.1 pts | 4.4% | – |
| Worked from home | 11.7%±3.7 pts | 17.2% | – |
| Mean travel time to work | 18.4 min±3.3 | 22.2 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 Plymouth?
2 census tracts lie mostly in Plymouth, and 1 more reaches into it (2020 census blocks). Their median household incomes run from $56,576 (Tract 9610.01) to $85,893 (Tract 9610.02).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9610.02Grafton County | 3,618 | $85,893 |
| Tract 9610.01Grafton County | 2,983 | $56,576 |
| Tract 9611.02Grafton County | 1,917 | $107,863 |
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 Plymouth) · Census block assignment files
How does Plymouth compare with other places in New Hampshire?
By the Census Bureau's July 2025 estimates, Plymouth is the 1,781st-most populous of the 16,079 U.S. towns and townships that have one and the 38th-most populous of 221 in New Hampshire.
Plymouth ranks 179th of 235 places in New Hampshire with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 38th | 221 |
| Growth 2020-2025 (PEP) | 157th | 187 |
| Residents per square mile | 112th | 241 |
| Median household income | 179th | 235 |
| Per capita income | 224th | 240 |
| Median home value | 171st | 239 |
| Median gross rent | 168th | 221 |
| Poverty rate | 7th | 160 |
| Bachelor's degree or higher | 35th | 239 |
| Median age | 233rd | 239 |
| Owner-occupied share | 216th | 241 |
| Work from home | 157th | 214 |
| Travel time to work | 228th | 241 |
Plymouth's figures with every place in New Hampshire (CSV)
Every place in New Hampshire, sortable · Compare Plymouth 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 Plymouth?
12 of the 57 figures for Plymouth 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 Plymouth 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.