Town · Connecticut
Thomaston, Connecticut
Thomaston, town, in Naugatuck Valley Planning Region, Connecticut. Thomaston had 7,572 residents on July 1, 2025 by the Census Bureau's estimate, up 1.7% since 2020; the 2020 Census counted 7,442 and the ACS 2020-2024 5-year estimates put it at 7,492 (±27). GEOID 0914075730.
Residents, July 2025 estimate
7,572
Census Bureau estimate (no margin published)
2020 Census count: 7,442 · ACS 2020-2024: 7,492 ±27
Median household income
$103,218
±$15,497 (90% margin)
Connecticut: $95,781
Median home value
$282,600
±$23,378 (90% margin)
Connecticut: $366,900
Median gross rent
$1,037
±$147 (90% margin)
Connecticut: $1,488
Where is Thomaston and what county is it in?
Thomaston is a town in Naugatuck Valley Planning Region, Connecticut. It covers 12.0 square miles of land, 621 residents per square mile in 2020.
One place lies inside Thomaston: Thomaston (CDP, 1,928 in 2020).
Thomaston is in the Waterbury-Shelton, CT metropolitan statistical area (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 Thomaston, and is it growing?
The Census Bureau estimates that 7,572 people lived in Thomaston on July 1, 2025, up 1.7% since 2020, slower than Connecticut (+2.2%). The 2020 Census counted 7,442 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 7,492 (±27).
| Measure | Thomaston | Naugatuck Valley Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Total population | 7,492±27 | 454,969 | – |
| Households | 3,097±278 | 180,116 | – |
| Average household size | 2.41±0.22 | 2.49 | – |
| Housing units | 3,349±291 | 192,551 | – |
Thomaston's population since 2000
From 7,503 in 2000 to 7,572 in 2025: up 0.9%. 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 41.5 years old; 20.5% are under 18 and 18.6% are 65 or older. The largest group is non-Hispanic white residents at 75.0%, then Hispanic or Latino residents (of any race) at 9.4%. 7.9% of residents were born outside the United States.
| Measure | Thomaston | Naugatuck Valley Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Median age | 41.5±7.7 | 41.8 | – |
| Under 18 years | 20.5%±5.2 pts | 20.3% | – |
| 65 years and over | 18.6%±3.3 pts | 19.2% | – |
| Male | 52.5%±4.0 pts | 48.9% | – |
| Hispanic or Latino (any race) | 9.4%±7.6 pts | 19.9% | – |
| White alone, not Hispanic | 75.0%±8.7 pts | 59.8% | – |
| Black or African American alone, not Hispanic | 2.6%±1.9 pts | 10.6% | – |
| Asian alone, not Hispanic | 4.0%±3.8 pts | 3.8% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±0.6 pts | 0.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.6 pts | 0.0% | – |
| Two or more races, not Hispanic | 9.0%±3.4 pts | 5.0% | – |
| Some other race alone, not Hispanic | 0.0%±0.6 pts | 0.9% | – |
| Born outside the United States | 7.9%±4.4 pts | 14.2% | – |
| Speak a language other than English at home (age 5+) | 9.8%±5.2 pts | 23.3% | – |
| Civilian veterans (age 18+) | 6.4%±2.2 pts | 5.0% | – |
| With a disability | 10.0%±2.6 pts | 13.8% | – |
| No health insurance coverage | 2.0%±1.8 pts | 4.8% | – |
| High school graduate or higher (age 25+) | 96.3%±1.5 pts | 90.5% | – |
| Bachelor's degree or higher (age 25+) | 34.0%±5.0 pts | 33.8% | – |
| Graduate or professional degree (age 25+) | 10.6%±2.7 pts | 14.5% | – |
| Lived in the same house a year earlier | 89.3%±3.9 pts | 90.5% | – |
| Moved from another state in the past year | 1.2%±1.3 pts | 1.7% | – |
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 Thomaston earn?
Half of Thomaston's 3,097 households earn less than $103,218 a year (±$15,497), against $86,191 in Naugatuck Valley Planning Region and $95,781 in Connecticut. 2.3% of residents live below the poverty line.
| Measure | Thomaston | Naugatuck Valley Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $103,218±$15,497 | $86,191 | – |
| Mean household income | $135,363±$30,624 | $114,324 | – |
| Per capita income | $56,568±$10,929 | $46,363 | – |
| People below the poverty line | 2.3%±1.1 pts | 11.2% | – |
| Children under 18 below the poverty line | 0.0%±2.8 pts | 15.8% | – |
| Households receiving SNAP | 4.1%±2.3 pts | 14.5% | – |
| Households with a computer | 94.3%±4.6 pts | 94.8% | – |
| Households with a broadband subscription | 90.4%±5.0 pts | 90.8% | – |
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 Thomaston?
Owners occupy 77.7% of Thomaston's occupied homes and renters 22.3%. The median owner-occupied home is valued at $282,600 by its owner (±$23,378). The median renter pays $1,037 a month including utilities, and 56.3% of renters pay 35% or more of their income on rent.
| Measure | Thomaston | Naugatuck Valley Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $282,600±$23,378 | $317,700 | – |
| Median gross rent | $1,037±$147 | $1,330 | – |
| Renters paying 35% or more of income on rent | 56.3%±13.9 pts | 44.4% | – |
| Median monthly owner costs, with a mortgage | $2,137±$105 | $2,229 | – |
| Owner-occupied homes | 77.7%±6.4 pts | 68.6% | – |
| Renter-occupied homes | 22.3%±6.4 pts | 31.4% | – |
| Housing units | 3,349±291 | 192,551 | – |
| Homeowner vacancy rate | 3.0%±4.6 pts | 1.0% | – |
| Rental vacancy rate | 0.0%±6.0 pts | 4.3% | – |
| Single-family detached homes | 67.6%±5.9 pts | 59.0% | – |
| Mobile homes | 1.9%±2.1 pts | 0.8% | – |
| Built 2020 or later | 1.6%±1.5 pts | 0.6% | – |
| Built 2010 to 2019 | 2.5%±2.1 pts | 3.3% | – |
| Built 1939 or earlier | 28.3%±6.5 pts | 19.3% | – |
| Households with no vehicle | 6.2%±4.6 pts | 9.1% | – |
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 0 new housing units in Thomaston in 2025 (0 in single-family houses), 0.0 per 1,000 residents against 2.0 across Connecticut.
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?
84.5% of Thomaston's workers drive alone and 7.6% work from home. The average trip to work takes 26.7 minutes. The unemployment rate in 2020-2024 averaged 5.6%.
| Measure | Thomaston | Naugatuck Valley Planning Region | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 70.5%±4.6 pts | 65.1% | – |
| Unemployment rate | 5.6%±3.5 pts | 6.0% | – |
| Drove alone to work | 84.5%±4.9 pts | 74.3% | – |
| Carpooled | 3.6%±2.8 pts | 8.8% | – |
| Public transportation | 0.6%±0.7 pts | 1.4% | – |
| Walked | 2.9%±2.1 pts | 1.3% | – |
| Worked from home | 7.6%±3.7 pts | 12.7% | – |
| Mean travel time to work | 26.7 min±2.7 | 28.3 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 census tracts are in Thomaston?
2 census tracts lie mostly in Thomaston (2020 census blocks). Their median household incomes run from $101,477 (Tract 3491) to $110,888 (Tract 3492).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 3491Naugatuck Valley Planning Region | 4,987 | $101,477 |
| Tract 3492Naugatuck Valley Planning Region | 2,505 | $110,888 |
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 Connecticut?
By the Census Bureau's July 2025 estimates, Thomaston is the 1,619th-most populous of the 16,079 U.S. towns and townships that have one and the 88th-most populous of 142 in Connecticut.
Thomaston ranks 173rd of 294 places in Connecticut with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 88th | 142 |
| Growth 2020-2025 (PEP) | 103rd | 167 |
| Residents per square mile | 187th | 303 |
| Median household income | 173rd | 294 |
| Per capita income | 158th | 303 |
| Median home value | 240th | 300 |
| Median gross rent | 256th | 266 |
| Poverty rate | 195th | 202 |
| Bachelor's degree or higher | 224th | 297 |
| Median age | 217th | 301 |
| Owner-occupied share | 167th | 300 |
| Work from home | 263rd | 279 |
| Travel time to work | 164th | 302 |
Thomaston's figures with every place in Connecticut (CSV)
Every place in Connecticut, 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?
18 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.