Census-designated place · Connecticut
Long Hill (Southeastern Connecticut County), Connecticut
Long Hill (Southeastern Connecticut County), census-designated place, in Southeastern Connecticut Planning Region, Connecticut. Long Hill (Southeastern Connecticut County) had 3,948 residents in the 2020 Census, a full count; the ACS 2020-2024 5-year estimates put it at 4,399 (±646). GEOID 0943790.
Residents, 2020 Census
3,948
Census count or controlled total
ACS 2020-2024 estimate: 4,399 ±646
Median household income
$84,201
±$22,168 (90% margin)
Connecticut: $95,781
Median home value
$175,600
±$61,598 (90% margin)
Connecticut: $366,900
Median gross rent
$1,722
±$116 (90% margin)
Connecticut: $1,488
Where is Long Hill (Southeastern Connecticut County) and what county is it in?
Long Hill (Southeastern Connecticut County) is a census-designated place: an unincorporated community the Census Bureau draws for counting, with no city government of its own, in Southeastern Connecticut Planning Region, Connecticut. It covers 1.5 square miles of land, 2,567 residents per square mile in 2020.
Long Hill (Southeastern Connecticut County) is in the Norwich-New London-Willimantic, CT metropolitan statistical area (Census Bureau delineation, July 2023).
Long Hill (Southeastern Connecticut County) lies entirely within Groton, a town with its own local government (2020 census blocks).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Long Hill (Southeastern Connecticut County), and is it growing?
The 2020 Census counted 3,948 residents in Long Hill (Southeastern Connecticut County), a full count rather than a sample. The 2020-2024 American Community Survey, a sample, estimates 4,399 (±646).
The Census Bureau publishes yearly population estimates for incorporated places only; Long Hill (Southeastern Connecticut County) is a census-designated place, so its figures come from the ACS and the 2020 Census.
| Measure | Long Hill (Southeastern Connecticut County) | Southeastern Connecticut Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Total population | 4,399 ±646 | 279,971 | no clear change |
| Households | 2,223 ±292 | 115,768 | no clear change |
| Average household size | 1.86 ±0.18 | 2.32 | no clear change |
| Housing units | 2,380 ±316 | 126,425 | no clear change |
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 Long Hill (Southeastern Connecticut County)?
The median resident of Long Hill (Southeastern Connecticut County) is 32.7 years old; 11.3% are under 18 and 17.3% are 65 or older. The largest group is non-Hispanic white residents at 56.6%, then non-Hispanic Asian residents at 20.9%. 19.2% of residents were born outside the United States.
| Measure | Long Hill (Southeastern Connecticut County) | Southeastern Connecticut Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Median age | 32.7 ±2.1 | 41.1 | no clear change |
| Under 18 years | 11.3% ±4.1 pts | 19.3% | – |
| 65 years and over | 17.3% ±4.2 pts | 19.5% | – |
| Male | 55.8% ±4.3 pts | 50.0% | – |
| Hispanic or Latino (any race) | 11.7% ±5.4 pts | 15.0% | no clear change |
| White alone, not Hispanic | 56.6% ±9.7 pts | 70.6% | no clear change |
| Black or African American alone, not Hispanic | 4.1% ±2.8 pts | 4.9% | – |
| Asian alone, not Hispanic | 20.9% ±8.8 pts | 3.7% | no clear change |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±1.0 pts | 0.3% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.0 pts | 0.0% | – |
| Two or more races, not Hispanic | 6.7% ±3.4 pts | 4.8% | – |
| Some other race alone, not Hispanic | 0.0% ±1.0 pts | 0.6% | – |
| Born outside the United States | 19.2% ±7.7 pts | 8.8% | no clear change |
| Speak a language other than English at home (age 5+) | 28.5% ±9.0 pts | 15.3% | – |
| Civilian veterans (age 18+) | 7.7% ±4.6 pts | 8.0% | – |
| With a disability | 21.0% ±6.0 pts | 14.8% | – |
| No health insurance coverage | 5.3% ±2.7 pts | 4.7% | – |
| High school graduate or higher (age 25+) | 94.3% ±3.0 pts | 92.8% | – |
| Bachelor's degree or higher (age 25+) | 47.9% ±9.1 pts | 35.8% | +13.4 pts |
| Graduate or professional degree (age 25+) | 22.6% ±9.0 pts | 16.0% | – |
| Lived in the same house a year earlier | 69.8% ±7.9 pts | 88.1% | – |
| Moved from another state in the past year | 7.1% ±4.2 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 Long Hill (Southeastern Connecticut County) earn?
Half of Long Hill (Southeastern Connecticut County)'s 2,223 households earn less than $84,201 a year (±$22,168), against $86,586 in Southeastern Connecticut Planning Region and $95,781 in Connecticut. In 2015-2019 it was $70,977 in 2024 dollars; the margins of error cannot tell the two periods apart. 16.1% of residents live below the poverty line.
| Measure | Long Hill (Southeastern Connecticut County) | Southeastern Connecticut Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $84,201 ±$22,168 | $86,586 | no clear change |
| Mean household income | $91,162 ±$15,649 | $111,769 | – |
| Per capita income | $47,145 ±$7,620 | $47,133 | no clear change |
| People below the poverty line | 16.1% ±5.5 pts | 10.7% | – |
| Children under 18 below the poverty line | 17.8% ±17.1 pts | 15.1% | – |
| Households receiving SNAP | 10.6% ±5.9 pts | 12.4% | – |
| Households with a computer | 97.1% ±2.3 pts | 95.2% | – |
| Households with a broadband subscription | 89.2% ±5.4 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 Long Hill (Southeastern Connecticut County)?
Owners occupy 22.4% of Long Hill (Southeastern Connecticut County)'s occupied homes and renters 77.6%. The median owner-occupied home is valued at $175,600 by its owner (±$61,598). The median renter pays $1,722 a month including utilities, and 35.2% of renters pay 35% or more of their income on rent.
| Measure | Long Hill (Southeastern Connecticut County) | Southeastern Connecticut Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $175,600 ±$61,598 | $323,400 | – |
| Median gross rent | $1,722 ±$116 | $1,365 | no clear change |
| Renters paying 35% or more of income on rent | 35.2% ±11.7 pts | 40.7% | no clear change |
| Median monthly owner costs, with a mortgage | $1,486 ±$388 | $2,140 | – |
| Owner-occupied homes | 22.4% ±8.1 pts | 65.1% | no clear change |
| Renter-occupied homes | 77.6% ±8.1 pts | 34.9% | – |
| Housing units | 2,380 ±316 | 126,425 | no clear change |
| Homeowner vacancy rate | 0.0% ±8.2 pts | 0.6% | – |
| Rental vacancy rate | 2.5% ±4.1 pts | 4.4% | – |
| Single-family detached homes | 17.2% ±6.8 pts | 61.1% | – |
| Mobile homes | 4.3% ±4.0 pts | 2.3% | – |
| Built 2020 or later | 0.0% ±1.8 pts | 0.8% | – |
| Built 2010 to 2019 | 3.7% ±3.2 pts | 4.0% | – |
| Built 1939 or earlier | 2.4% ±2.6 pts | 23.6% | – |
| Households with no vehicle | 13.7% ±7.7 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 do people in Long Hill (Southeastern Connecticut County) work and get to work?
61.1% of Long Hill (Southeastern Connecticut County)'s workers drive alone and 20.7% work from home. The average trip to work takes 23.2 minutes.
| Measure | Long Hill (Southeastern Connecticut County) | Southeastern Connecticut Planning Region | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 68.8% ±6.2 pts | 64.0% | – |
| Unemployment rate | 6.4% ±6.9 pts | 5.0% | – |
| Drove alone to work | 61.1% ±9.7 pts | 75.5% | – |
| Carpooled | 13.5% ±5.7 pts | 7.0% | – |
| Public transportation | 0.8% ±1.7 pts | 1.4% | – |
| Walked | 1.3% ±1.7 pts | 2.9% | – |
| Worked from home | 20.7% ±8.9 pts | 11.7% | – |
| Mean travel time to work | 23.2 min ±6.3 | 23.9 min | +7.7 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 Long Hill (Southeastern Connecticut County)?
1 census tract lies mostly in Long Hill (Southeastern Connecticut County) (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 7027Southeastern Connecticut Planning Region | 5,047 | $82,112 |
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 Long Hill (Southeastern Connecticut County)) · Census block assignment files
How does Long Hill (Southeastern Connecticut County) compare with other places in Connecticut?
Long Hill (Southeastern Connecticut County) ranks 232nd of 294 places in Connecticut with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population (ACS 2020-2024) | 178th | 303 |
| Residents per square mile | 38th | 303 |
| Median household income | 232nd | 294 |
| Per capita income | 222nd | 303 |
| Median home value | 300th | 300 |
| Median gross rent | 81st | 266 |
| Poverty rate | 20th | 202 |
| Bachelor's degree or higher | 134th | 297 |
| Median age | 290th | 301 |
| Owner-occupied share | 299th | 300 |
| Work from home | 94th | 279 |
| Travel time to work | 244th | 302 |
Long Hill (Southeastern Connecticut County)'s figures with every place in Connecticut (CSV)
Every place in Connecticut, sortable · Compare Long Hill (Southeastern Connecticut County) 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 Long Hill (Southeastern Connecticut County)?
14 of the 57 figures for Long Hill (Southeastern Connecticut County) 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 Long Hill (Southeastern Connecticut County) 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.