Town · Connecticut
Stonington, Connecticut
Stonington, town, in Southeastern Connecticut Planning Region, Connecticut. Stonington had 18,832 residents on July 1, 2025 by the Census Bureau's estimate, up 2.7% since 2020; the 2020 Census counted 18,335 and the ACS 2020-2024 5-year estimates put it at 18,478 (±24). GEOID 0918073770.
Residents, July 2025 estimate
18,832
Census Bureau estimate (no margin published)
2020 Census count: 18,335 · ACS 2020-2024: 18,478 ±24
Median household income
$114,797
±$11,865 (90% margin)
Connecticut: $95,781
Median home value
$483,400
±$25,549 (90% margin)
Connecticut: $366,900
Median gross rent
$1,446
±$93 (90% margin)
Connecticut: $1,488
Where is Stonington and what county is it in?
Stonington is a town in Southeastern Connecticut Planning Region, Connecticut. It covers 38.6 square miles of land, 475 residents per square mile in 2020.
3 places lie inside Stonington: Pawcatuck (CDP, 5,433 in 2020), Mystic (CDP, 4,348 in 2020) and Stonington (borough, 976 in 2020).
Stonington is in the Norwich-New London-Willimantic, 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 Stonington, and is it growing?
The Census Bureau estimates that 18,832 people lived in Stonington on July 1, 2025, up 2.7% since 2020, in line with Connecticut (+2.2%). The 2020 Census counted 18,335 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 18,478 (±24).
| Measure | Stonington | Southeastern Connecticut Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Total population | 18,478±24 | 279,971 | – |
| Households | 8,702±322 | 115,768 | – |
| Average household size | 2.09±0.08 | 2.32 | – |
| Housing units | 9,900±337 | 126,425 | – |
Stonington's population since 2000
From 17,906 in 2000 to 18,832 in 2025: up 5.2%. The 2000, 2010 and 2020 figures are census counts, each for Stonington 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 Stonington?
The median resident of Stonington is 52.8 years old; 16.1% are under 18 and 29.3% are 65 or older. The largest group is non-Hispanic white residents at 85.5%, then non-Hispanic residents of two or more races at 6.9%. 5.6% of residents were born outside the United States.
| Measure | Stonington | Southeastern Connecticut Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Median age | 52.8±1.7 | 41.1 | – |
| Under 18 years | 16.1%±1.9 pts | 19.3% | – |
| 65 years and over | 29.3%±2.3 pts | 19.5% | – |
| Male | 49.1%±1.7 pts | 50.0% | – |
| Hispanic or Latino (any race) | 2.8%±1.2 pts | 15.0% | – |
| White alone, not Hispanic | 85.5%±4.0 pts | 70.6% | – |
| Black or African American alone, not Hispanic | 2.1%±1.1 pts | 4.9% | – |
| Asian alone, not Hispanic | 1.8%±1.3 pts | 3.7% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.3%±0.3 pts | 0.3% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.2 pts | 0.0% | – |
| Two or more races, not Hispanic | 6.9%±3.8 pts | 4.8% | – |
| Some other race alone, not Hispanic | 0.6%±0.5 pts | 0.6% | – |
| Born outside the United States | 5.6%±1.5 pts | 8.8% | – |
| Speak a language other than English at home (age 5+) | 6.3%±2.0 pts | 15.3% | – |
| Civilian veterans (age 18+) | 7.0%±1.5 pts | 8.0% | – |
| With a disability | 13.2%±2.1 pts | 14.8% | – |
| No health insurance coverage | 3.6%±1.4 pts | 4.7% | – |
| High school graduate or higher (age 25+) | 96.8%±1.0 pts | 92.8% | – |
| Bachelor's degree or higher (age 25+) | 53.4%±3.0 pts | 35.8% | – |
| Graduate or professional degree (age 25+) | 23.8%±3.0 pts | 16.0% | – |
| Lived in the same house a year earlier | 90.3%±2.1 pts | 88.1% | – |
| Moved from another state in the past year | 3.8%±1.3 pts | 3.3% | – |
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 Stonington earn?
Half of Stonington's 8,702 households earn less than $114,797 a year (±$11,865), against $86,586 in Southeastern Connecticut Planning Region and $95,781 in Connecticut. 7.0% of residents live below the poverty line.
| Measure | Stonington | Southeastern Connecticut Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $114,797±$11,865 | $86,586 | – |
| Mean household income | $156,147±$10,190 | $111,769 | – |
| Per capita income | $73,995±$5,040 | $47,133 | – |
| People below the poverty line | 7.0%±1.9 pts | 10.7% | – |
| Children under 18 below the poverty line | 11.8%±7.0 pts | 15.1% | – |
| Households receiving SNAP | 6.0%±1.6 pts | 12.4% | – |
| Households with a computer | 94.8%±2.0 pts | 95.2% | – |
| Households with a broadband subscription | 92.5%±2.2 pts | 91.6% | – |
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 Stonington?
Owners occupy 72.6% of Stonington's occupied homes and renters 27.4%. The median owner-occupied home is valued at $483,400 by its owner (±$25,549). The median renter pays $1,446 a month including utilities, and 31.3% of renters pay 35% or more of their income on rent.
| Measure | Stonington | Southeastern Connecticut Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $483,400±$25,549 | $323,400 | – |
| Median gross rent | $1,446±$93 | $1,365 | – |
| Renters paying 35% or more of income on rent | 31.3%±7.0 pts | 40.7% | – |
| Median monthly owner costs, with a mortgage | $2,509±$183 | $2,140 | – |
| Owner-occupied homes | 72.6%±3.6 pts | 65.1% | – |
| Renter-occupied homes | 27.4%±3.6 pts | 34.9% | – |
| Housing units | 9,900±337 | 126,425 | – |
| Homeowner vacancy rate | 0.8%±1.0 pts | 0.6% | – |
| Rental vacancy rate | 4.1%±3.1 pts | 4.4% | – |
| Single-family detached homes | 70.9%±3.0 pts | 61.1% | – |
| Mobile homes | 2.2%±1.0 pts | 2.3% | – |
| Built 2020 or later | 1.3%±0.7 pts | 0.8% | – |
| Built 2010 to 2019 | 3.9%±1.2 pts | 4.0% | – |
| Built 1939 or earlier | 30.6%±3.6 pts | 23.6% | – |
| Households with no vehicle | 6.4%±2.0 pts | 7.4% | – |
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 Stonington building?
Builders took permits for 39 new housing units in Stonington in 2025 (39 in single-family houses), 2.1 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 Stonington work and get to work?
73.0% of Stonington's workers drive alone and 18.3% work from home. The average trip to work takes 23.5 minutes. The unemployment rate in 2020-2024 averaged 3.5%.
| Measure | Stonington | Southeastern Connecticut Planning Region | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 62.4%±2.6 pts | 64.0% | – |
| Unemployment rate | 3.5%±1.2 pts | 5.0% | – |
| Drove alone to work | 73.0%±3.3 pts | 75.5% | – |
| Carpooled | 4.9%±1.9 pts | 7.0% | – |
| Public transportation | 0.2%±0.4 pts | 1.4% | – |
| Walked | 1.9%±1.4 pts | 2.9% | – |
| Worked from home | 18.3%±2.5 pts | 11.7% | – |
| Mean travel time to work | 23.5 min±1.6 | 23.9 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 Stonington?
5 census tracts lie mostly in Stonington (2020 census blocks). Their median household incomes run from $88,713 (Tract 7051.02) to $152,618 (Tract 7053).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 7051.02Southeastern Connecticut Planning Region | 4,341 | $88,713 |
| Tract 7051.01Southeastern Connecticut Planning Region | 4,032 | $99,783 |
| Tract 7053Southeastern Connecticut Planning Region | 3,652 | $152,618 |
| Tract 7052Southeastern Connecticut Planning Region | 3,612 | $120,182 |
| Tract 7054Southeastern Connecticut Planning Region | 2,841 | $145,739 |
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 Stonington) · Census block assignment files
How does Stonington compare with other places in Connecticut?
By the Census Bureau's July 2025 estimates, Stonington is the 631st-most populous of the 16,079 U.S. towns and townships that have one and the 40th-most populous of 142 in Connecticut.
Stonington ranks 124th 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 | 40th | 142 |
| Growth 2020-2025 (PEP) | 58th | 167 |
| Residents per square mile | 203rd | 303 |
| Median household income | 124th | 294 |
| Per capita income | 71st | 303 |
| Median home value | 77th | 300 |
| Median gross rent | 141st | 266 |
| Poverty rate | 91st | 202 |
| Bachelor's degree or higher | 104th | 297 |
| Median age | 35th | 301 |
| Owner-occupied share | 196th | 300 |
| Work from home | 126th | 279 |
| Travel time to work | 236th | 302 |
Stonington's figures with every place in Connecticut (CSV)
Every place in Connecticut, sortable · Compare Stonington 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 Stonington?
8 of the 57 figures for Stonington 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 Stonington 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.