Town · Connecticut
Southbury, Connecticut
Southbury, town, in Naugatuck Valley Planning Region, Connecticut. Southbury had 20,468 residents on July 1, 2025 by the Census Bureau's estimate, up 3.0% since 2020; the 2020 Census counted 19,879 and the ACS 2020-2024 5-year estimates put it at 20,071 (±23). GEOID 0914069640.
Residents, July 2025 estimate
20,468
Census Bureau estimate (no margin published)
2020 Census count: 19,879 · ACS 2020-2024: 20,071 ±23
Median household income
$112,887
±$8,440 (90% margin)
Connecticut: $95,781
Median home value
$411,600
±$17,997 (90% margin)
Connecticut: $366,900
Median gross rent
$1,935
±$277 (90% margin)
Connecticut: $1,488
Where is Southbury and what county is it in?
Southbury is a town in Naugatuck Valley Planning Region, Connecticut. It covers 39.0 square miles of land, 510 residents per square mile in 2020.
One place lies inside Southbury: Heritage Village (CDP, 5,091 in 2020).
Southbury 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 Southbury, and is it growing?
The Census Bureau estimates that 20,468 people lived in Southbury on July 1, 2025, up 3.0% since 2020, faster than Connecticut (+2.2%). The 2020 Census counted 19,879 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 20,071 (±23).
| Measure | Southbury | Naugatuck Valley Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Total population | 20,071±23 | 454,969 | – |
| Households | 8,424±355 | 180,116 | – |
| Average household size | 2.31±0.10 | 2.49 | – |
| Housing units | 8,966±422 | 192,551 | – |
Southbury's population since 2000
From 18,567 in 2000 to 20,468 in 2025: up 10.2%. The 2000, 2010 and 2020 figures are census counts, each for Southbury 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 Southbury?
The median resident of Southbury is 54.2 years old; 17.5% are under 18 and 33.0% are 65 or older. The largest group is non-Hispanic white residents at 84.2%, then Hispanic or Latino residents (of any race) at 6.9%. 7.3% of residents were born outside the United States.
| Measure | Southbury | Naugatuck Valley Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Median age | 54.2±2.4 | 41.8 | – |
| Under 18 years | 17.5%±2.3 pts | 20.3% | – |
| 65 years and over | 33.0%±2.8 pts | 19.2% | – |
| Male | 46.8%±2.0 pts | 48.9% | – |
| Hispanic or Latino (any race) | 6.9%±2.6 pts | 19.9% | – |
| White alone, not Hispanic | 84.2%±4.1 pts | 59.8% | – |
| Black or African American alone, not Hispanic | 2.8%±1.9 pts | 10.6% | – |
| Asian alone, not Hispanic | 2.5%±1.4 pts | 3.8% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±0.1 pts | 0.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.2 pts | 0.0% | – |
| Two or more races, not Hispanic | 2.5%±1.3 pts | 5.0% | – |
| Some other race alone, not Hispanic | 1.2%±1.3 pts | 0.9% | – |
| Born outside the United States | 7.3%±1.9 pts | 14.2% | – |
| Speak a language other than English at home (age 5+) | 11.0%±2.6 pts | 23.3% | – |
| Civilian veterans (age 18+) | 7.6%±1.6 pts | 5.0% | – |
| With a disability | 13.6%±1.6 pts | 13.8% | – |
| No health insurance coverage | 0.8%±0.6 pts | 4.8% | – |
| High school graduate or higher (age 25+) | 94.8%±1.4 pts | 90.5% | – |
| Bachelor's degree or higher (age 25+) | 51.8%±3.3 pts | 33.8% | – |
| Graduate or professional degree (age 25+) | 24.4%±3.0 pts | 14.5% | – |
| Lived in the same house a year earlier | 91.1%±2.7 pts | 90.5% | – |
| Moved from another state in the past year | 2.2%±1.7 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 Southbury earn?
Half of Southbury's 8,424 households earn less than $112,887 a year (±$8,440), against $86,191 in Naugatuck Valley Planning Region and $95,781 in Connecticut. 3.4% of residents live below the poverty line.
| Measure | Southbury | Naugatuck Valley Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $112,887±$8,440 | $86,191 | – |
| Mean household income | $163,782±$19,440 | $114,324 | – |
| Per capita income | $67,509±$5,898 | $46,363 | – |
| People below the poverty line | 3.4%±0.8 pts | 11.2% | – |
| Children under 18 below the poverty line | 0.0%±1.2 pts | 15.8% | – |
| Households receiving SNAP | 5.0%±2.0 pts | 14.5% | – |
| Households with a computer | 95.5%±2.3 pts | 94.8% | – |
| Households with a broadband subscription | 93.2%±2.2 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 Southbury?
Owners occupy 88.2% of Southbury's occupied homes and renters 11.8%. The median owner-occupied home is valued at $411,600 by its owner (±$17,997). The median renter pays $1,935 a month including utilities, and 47.5% of renters pay 35% or more of their income on rent.
| Measure | Southbury | Naugatuck Valley Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $411,600±$17,997 | $317,700 | – |
| Median gross rent | $1,935±$277 | $1,330 | – |
| Renters paying 35% or more of income on rent | 47.5%±13.6 pts | 44.4% | – |
| Median monthly owner costs, with a mortgage | $2,659±$159 | $2,229 | – |
| Owner-occupied homes | 88.2%±2.7 pts | 68.6% | – |
| Renter-occupied homes | 11.8%±2.7 pts | 31.4% | – |
| Housing units | 8,966±422 | 192,551 | – |
| Homeowner vacancy rate | 0.4%±0.6 pts | 1.0% | – |
| Rental vacancy rate | 0.0%±4.2 pts | 4.3% | – |
| Single-family detached homes | 57.9%±2.8 pts | 59.0% | – |
| Mobile homes | 0.2%±0.3 pts | 0.8% | – |
| Built 2020 or later | 0.4%±0.4 pts | 0.6% | – |
| Built 2010 to 2019 | 2.6%±1.2 pts | 3.3% | – |
| Built 1939 or earlier | 8.4%±2.0 pts | 19.3% | – |
| Households with no vehicle | 6.1%±2.3 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 Southbury building?
Builders took permits for 20 new housing units in Southbury in 2025 (20 in single-family houses), 1.0 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 Southbury work and get to work?
71.2% of Southbury's workers drive alone and 20.3% work from home. The average trip to work takes 29.9 minutes. The unemployment rate in 2020-2024 averaged 3.0%.
| Measure | Southbury | Naugatuck Valley Planning Region | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 58.9%±2.9 pts | 65.1% | – |
| Unemployment rate | 3.0%±1.1 pts | 6.0% | – |
| Drove alone to work | 71.2%±4.0 pts | 74.3% | – |
| Carpooled | 6.9%±2.8 pts | 8.8% | – |
| Public transportation | 0.7%±0.6 pts | 1.4% | – |
| Walked | 0.1%±0.2 pts | 1.3% | – |
| Worked from home | 20.3%±3.8 pts | 12.7% | – |
| Mean travel time to work | 29.9 min±2.0 | 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 Southbury?
5 census tracts lie mostly in Southbury (2020 census blocks). Their median household incomes run from $63,824 (Tract 3481.24) to $165,662 (Tract 3481.23).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 3481.23Naugatuck Valley Planning Region | 5,913 | $165,662 |
| Tract 3481.25Naugatuck Valley Planning Region | 4,866 | $68,897 |
| Tract 3481.22Naugatuck Valley Planning Region | 4,225 | $162,946 |
| Tract 3481.24Naugatuck Valley Planning Region | 2,733 | $63,824 |
| Tract 3481.11Naugatuck Valley Planning Region | 2,334 | $118,750 |
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 Southbury) · Census block assignment files
How does Southbury compare with other places in Connecticut?
By the Census Bureau's July 2025 estimates, Southbury is the 574th-most populous of the 16,079 U.S. towns and townships that have one and the 34th-most populous of 142 in Connecticut.
Southbury ranks 130th 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 | 34th | 142 |
| Growth 2020-2025 (PEP) | 47th | 167 |
| Residents per square mile | 198th | 303 |
| Median household income | 130th | 294 |
| Per capita income | 94th | 303 |
| Median home value | 115th | 300 |
| Median gross rent | 50th | 266 |
| Poverty rate | 178th | 202 |
| Bachelor's degree or higher | 110th | 297 |
| Median age | 22nd | 301 |
| Owner-occupied share | 74th | 300 |
| Work from home | 100th | 279 |
| Travel time to work | 100th | 302 |
Southbury's figures with every place in Connecticut (CSV)
Every place in Connecticut, sortable · Compare Southbury 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 Southbury?
13 of the 57 figures for Southbury 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 Southbury 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.