Town · Maine
Thomaston, Maine
Thomaston, town, in Knox County, Maine. Thomaston had 2,751 residents on July 1, 2025 by the Census Bureau's estimate, up 0.7% since 2020; the 2020 Census counted 2,739 and the ACS 2020-2024 5-year estimates put it at 2,769 (±20). GEOID 2301376365.
Residents, July 2025 estimate
2,751
Census Bureau estimate (no margin published)
2020 Census count: 2,739 · ACS 2020-2024: 2,769 ±20
Median household income
$56,435
±$12,937 (90% margin)
Maine: $74,733
Median home value
$271,700
±$10,061 (90% margin)
Maine: $296,600
Median gross rent
$1,262
±$343 (90% margin)
Maine: $1,139
Where is Thomaston and what county is it in?
Thomaston is a town in Knox County, Maine. It covers 10.9 square miles of land, 251 residents per square mile in 2020.
One place lies inside Thomaston: Thomaston (CDP, 1,836 in 2020).
Thomaston is the same area as Census Tract 9704.02 of Knox County: the tract's figures are Thomaston's own.
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Thomaston, and is it growing?
The Census Bureau estimates that 2,751 people lived in Thomaston on July 1, 2025, up 0.7% since 2020, slower than Maine (+3.8%). The 2020 Census counted 2,739 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 2,769 (±20).
| Measure | Thomaston | Knox County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 2,769±20 | 41,003 | no clear change |
| Households | 1,420±129 | 18,484 | no clear change |
| Average household size | 1.93±0.18 | 2.12 | no clear change |
| Housing units | 1,500±132 | 24,564 | no clear change |
Thomaston's population since 2000
From 3,748 in 2000 to 2,751 in 2025: down 26.6%. The 2000, 2010 and 2020 figures are census counts, each for Thomaston 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 Thomaston?
The median resident of Thomaston is 58.1 years old; 19.2% are under 18 and 35.5% are 65 or older. The largest group is non-Hispanic white residents at 92.2%, then Hispanic or Latino residents (of any race) at 3.8%.
| Measure | Thomaston | Knox County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 58.1±6.6 | 49.5 | +13.3 |
| Under 18 years | 19.2%±4.6 pts | 16.8% | – |
| 65 years and over | 35.5%±8.1 pts | 27.9% | – |
| Male | 42.4%±4.8 pts | 50.2% | – |
| Hispanic or Latino (any race) | 3.8%±4.0 pts | 1.9% | – |
| White alone, not Hispanic | 92.2%±5.2 pts | 93.2% | no clear change |
| Black or African American alone, not Hispanic | 0.5%±0.8 pts | 0.3% | – |
| Asian alone, not Hispanic | 0.0%±1.0 pts | 0.5% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±1.0 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±1.0 pts | 0.0% | – |
| Two or more races, not Hispanic | 3.5%±3.1 pts | 3.8% | – |
| Some other race alone, not Hispanic | 0.0%±1.0 pts | 0.2% | – |
| Born outside the United States | 2.5%±1.7 pts | 3.1% | – |
| Speak a language other than English at home (age 5+) | 0.0%±1.1 pts | 4.2% | – |
| Civilian veterans (age 18+) | 5.5%±2.3 pts | 8.7% | – |
| With a disability | 20.0%±7.5 pts | 13.0% | – |
| No health insurance coverage | 2.4%±1.8 pts | 5.5% | – |
| High school graduate or higher (age 25+) | 95.9%±3.1 pts | 94.8% | – |
| Bachelor's degree or higher (age 25+) | 30.9%±9.8 pts | 39.7% | no clear change |
| Graduate or professional degree (age 25+) | 16.7%±6.6 pts | 15.3% | – |
| Lived in the same house a year earlier | 82.2%±13.2 pts | 90.3% | – |
| Moved from another state in the past year | 2.6%±3.0 pts | 3.1% | – |
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 Thomaston earn?
Half of Thomaston's 1,420 households earn less than $56,435 a year (±$12,937), against $74,096 in Knox County and $74,733 in Maine. In 2015-2019 it was $67,665 in 2024 dollars; the margins of error cannot tell the two periods apart. 6.6% of residents live below the poverty line.
| Measure | Thomaston | Knox County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $56,435±$12,937 | $74,096 | no clear change |
| Mean household income | $69,568±$10,066 | $99,101 | – |
| Per capita income | $33,828±$5,265 | $44,763 | no clear change |
| People below the poverty line | 6.6%±4.1 pts | 8.2% | no clear change |
| Children under 18 below the poverty line | 0.0%±5.0 pts | 6.4% | – |
| Households receiving SNAP | 13.4%±8.0 pts | 8.5% | – |
| Households with a computer | 92.2%±6.1 pts | 94.8% | – |
| Households with a broadband subscription | 91.5%±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 Thomaston?
Owners occupy 73.9% of Thomaston's occupied homes and renters 26.1%. The median owner-occupied home is valued at $271,700 by its owner (±$10,061). The median renter pays $1,262 a month including utilities, and 57.8% of renters pay 35% or more of their income on rent.
| Measure | Thomaston | Knox County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $271,700±$10,061 | $324,900 | +$59,651 |
| Median gross rent | $1,262±$343 | $1,165 | no clear change |
| Renters paying 35% or more of income on rent | 57.8%±22.5 pts | 36.3% | – |
| Median monthly owner costs, with a mortgage | $1,654±$157 | $1,691 | – |
| Owner-occupied homes | 73.9%±9.8 pts | 78.7% | no clear change |
| Renter-occupied homes | 26.1%±9.8 pts | 21.3% | – |
| Housing units | 1,500±132 | 24,564 | no clear change |
| Homeowner vacancy rate | 0.0%±2.6 pts | 0.9% | – |
| Rental vacancy rate | 0.0%±7.2 pts | 3.3% | – |
| Single-family detached homes | 77.6%±9.3 pts | 79.4% | – |
| Mobile homes | 1.2%±1.4 pts | 5.8% | – |
| Built 2020 or later | 0.0%±1.8 pts | 0.6% | – |
| Built 2010 to 2019 | 2.8%±2.2 pts | 5.3% | – |
| Built 1939 or earlier | 48.2%±12.1 pts | 32.9% | – |
| Households with no vehicle | 2.2%±2.8 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 many new homes is Thomaston building?
Builders took permits for 7 new housing units in Thomaston in 2025 (7 in single-family houses), 2.5 per 1,000 residents against 4.9 across Maine.
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 Thomaston work and get to work?
86.3% of Thomaston's workers drive alone. The average trip to work takes 13.6 minutes.
| Measure | Thomaston | Knox County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 53.0%±9.6 pts | 58.1% | – |
| Unemployment rate | 3.3%±2.9 pts | 3.9% | – |
| Drove alone to work | 86.3%±7.8 pts | 68.8% | – |
| Carpooled | 6.0%±6.1 pts | 9.4% | – |
| Public transportation | 0.0%±2.4 pts | 0.1% | – |
| Walked | 0.0%±2.4 pts | 3.5% | – |
| Worked from home | 4.4%±3.8 pts | 16.6% | – |
| Mean travel time to work | 13.6 min±1.8 | 19.6 min | −3.5 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 census tracts are in Thomaston?
1 census tract lies mostly in Thomaston (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9704.02Knox County | 2,769 | $56,435 |
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 Thomaston) · Census block assignment files
How does Thomaston compare with other places in Maine?
By the Census Bureau's July 2025 estimates, Thomaston is the 3,812th-most populous of the 16,079 U.S. towns and townships that have one and the 111th-most populous of 454 in Maine.
Thomaston ranks 283rd of 349 places in Maine with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 111th | 454 |
| Growth 2020-2025 (PEP) | 221st | 273 |
| Residents per square mile | 110th | 353 |
| Median household income | 283rd | 349 |
| Per capita income | 256th | 353 |
| Median home value | 160th | 352 |
| Median gross rent | 78th | 301 |
| Poverty rate | 219th | 277 |
| Bachelor's degree or higher | 162nd | 352 |
| Median age | 24th | 353 |
| Owner-occupied share | 249th | 353 |
| Travel time to work | 342nd | 352 |
Thomaston's figures with every place in Maine (CSV)
Every place in Maine, sortable · Compare Thomaston 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 Thomaston?
23 of the 57 figures for Thomaston 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 Thomaston 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.