Census tract · Southeastern Connecticut Planning Region
Census Tract 7021, Southeastern Connecticut Planning Region, Connecticut
Census Tract 7021, GEOID 09180702100, in Southeastern Connecticut Planning Region, Connecticut, entirely within Groton. 4,575 residents in the ACS 2020-2024 5-year estimates (±462); the 2020 Census counted 4,504.
Residents, 2020-2024
4,575
±462 (90% margin)
2020 Census count: 4,504
Median household income
$128,750
±$20,957 (90% margin)
Southeastern Connecticut Planning Region: $86,586
Median home value
$348,400
±$20,155 (90% margin)
Southeastern Connecticut Planning Region: $323,400
Median gross rent
$1,733
±$604 (90% margin)
Southeastern Connecticut Planning Region: $1,365
Where is Census Tract 7021?
Census Tract 7021 is one of 68 census tracts in Southeastern Connecticut Planning Region, Connecticut. It covers 8.55 square miles of land, 527 residents per square mile in 2020. Its GEOID, 09180702100, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Groton | 100% |
| Old Mystic | 69% |
| Conning Towers-Nautilus Park | 1% |
5 census tracts border Census Tract 7021: Tract 7011 ($105,230), Tract 7028 ($70,809), Tract 7030 ($161,250), Tract 7054 ($145,739) and Tract 8702 ($81,545). The figure in brackets is each tract's median household income.
Whether a tract counts as low- or moderate-income for bank lending (the Community Reinvestment Act) is set by the FFIEC against its metro area's family income: look it up in the FFIEC census geocoder.
Source: 2024 Gazetteer and 2020 block assignment files, U.S. Census Bureau · Census reference files
How many people live in Census Tract 7021?
The 2020-2024 American Community Survey puts Census Tract 7021's population at 4,575 (±462) in 1,732 households; the 2020 Census counted 4,504 residents and 1,935 housing units.
| Measure | Tract 7021 | Groton |
|---|---|---|
| Total population | 4,575 ±462 | 38,130 |
| Households | 1,732 ±166 | 16,374 |
| Average household size | 2.63 ±0.21 | 2.22 |
| Housing units | 1,889 ±173 | 18,155 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Census Tract 7021?
The median resident of Census Tract 7021 is 42.9 years old; 23.5% are under 18 and 20.0% are 65 or older. The largest group is non-Hispanic white residents at 80.6%, then Hispanic or Latino residents (of any race) at 8.6%. 9.5% of residents were born outside the United States.
| Measure | Tract 7021 | Groton |
|---|---|---|
| Median age | 42.9 ±4.0 | 36.8 |
| Under 18 years | 23.5% ±2.7 pts | 18.4% |
| 65 years and over | 20.0% ±3.9 pts | 19.5% |
| Hispanic or Latino (any race) | 8.6% ±4.4 pts | 12.1% |
| White alone, not Hispanic | 80.6% ±5.8 pts | 69.9% |
| Black or African American alone, not Hispanic | 1.4% ±1.2 pts | 4.7% |
| Asian alone, not Hispanic | 5.6% ±3.2 pts | 6.6% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.9 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.9 pts | 0.0% |
| Two or more races, not Hispanic | 3.5% ±2.4 pts | 6.4% |
| Some other race alone, not Hispanic | 0.3% ±0.5 pts | 0.3% |
| Born outside the United States | 9.5% ±3.8 pts | 8.3% |
| Speak a language other than English at home (age 5+) | 7.9% ±3.7 pts | 10.9% |
| Civilian veterans (age 18+) | 14.0% ±3.6 pts | 10.0% |
| With a disability | 14.8% ±3.5 pts | 15.3% |
| No health insurance coverage | 5.4% ±3.3 pts | 4.2% |
| High school graduate or higher (age 25+) | 96.2% ±1.8 pts | 95.0% |
| Bachelor's degree or higher (age 25+) | 41.5% ±6.1 pts | 42.7% |
| Graduate or professional degree (age 25+) | 17.7% ±4.5 pts | 18.8% |
| Lived in the same house a year earlier | 90.8% ±4.6 pts | 79.3% |
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 Census Tract 7021 earn?
Half of the 1,732 households in Census Tract 7021 earn less than $128,750 a year (±$20,957), against $86,586 across Southeastern Connecticut Planning Region: 10th highest of the county's 66 tracts with a reliable estimate. 4.3% of residents live below the poverty line.
| Measure | Tract 7021 | Groton |
|---|---|---|
| Median household income | $128,750 ±$20,957 | $88,284 |
| Mean household income | $150,307 ±$18,657 | $115,809 |
| Per capita income | $55,548 ±$6,937 | $51,281 |
| People below the poverty line | 4.3% ±2.8 pts | 10.6% |
| Children under 18 below the poverty line | 3.3% ±4.2 pts | 15.2% |
| Households receiving SNAP | 5.7% ±3.4 pts | 10.9% |
| Households with a computer | 95.2% ±3.6 pts | 96.1% |
| Households with a broadband subscription | 94.2% ±3.7 pts | 91.0% |
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 Census Tract 7021?
Owners occupy 91.5% of Census Tract 7021's occupied homes and renters 8.5%. The median owner-occupied home is valued at $348,400 by its owner (±$20,155). The median renter pays $1,733 a month including utilities.
| Measure | Tract 7021 | Groton |
|---|---|---|
| Median home value (owner-occupied) | $348,400 ±$20,155 | $340,100 |
| Median gross rent | $1,733 ±$604 | $1,602 |
| Renters paying 35% or more of income on rent | 13.7% ±16.9 pts | 38.8% |
| Median monthly owner costs, with a mortgage | $2,170 ±$267 | $2,098 |
| Owner-occupied homes | 91.5% ±4.4 pts | 53.4% |
| Renter-occupied homes | 8.5% ±4.4 pts | 46.6% |
| Housing units | 1,889 ±173 | 18,155 |
| Single-family detached homes | 89.1% ±4.4 pts | 47.6% |
| Mobile homes | 1.9% ±2.5 pts | 2.2% |
| Built 2020 or later | 1.4% ±1.4 pts | 0.8% |
| Built 2010 to 2019 | 3.4% ±1.9 pts | 3.2% |
| Built 1939 or earlier | 2.2% ±1.7 pts | 15.4% |
| Households with no vehicle | 5.3% ±3.1 pts | 7.2% |
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 Census Tract 7021 get to work?
84.8% of Census Tract 7021's workers drive alone and 12.4% work from home. The average trip to work takes 25.1 minutes.
| Measure | Tract 7021 | Groton |
|---|---|---|
| In the labor force (age 16+) | 60.8% ±5.5 pts | 65.7% |
| Unemployment rate | 2.4% ±1.9 pts | 5.2% |
| Drove alone to work | 84.8% ±5.3 pts | 70.5% |
| Carpooled | 1.9% ±1.7 pts | 7.2% |
| Public transportation | 0.0% ±2.0 pts | 0.4% |
| Walked | 0.8% ±1.0 pts | 6.4% |
| Worked from home | 12.4% ±4.8 pts | 13.6% |
| Mean travel time to work | 25.1 min ±3.6 | 19.3 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
How does Census Tract 7021 compare with the other tracts in Southeastern Connecticut Planning Region?
Among Southeastern Connecticut Planning Region's tracts with a reliable estimate, Census Tract 7021 ranks as shown below (1 = highest).
| Measure | In Southeastern Connecticut Planning Region |
|---|---|
| Population | 25th of 67 |
| Residents per square mile | 46th of 67 |
| Median household income | 10th of 66 |
| Per capita income | 20th of 67 |
| Median home value | 21st of 65 |
| Median gross rent | 9th of 54 |
| Poverty rate | 40th of 45 |
| Bachelor's degree or higher | 24th of 66 |
| Median age | 35th of 67 |
| Owner-occupied share | 6th of 66 |
The tracts next to it on Southeastern Connecticut Planning Region's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 6935 | 7th | $140,688±$28,778 · within the margin of this tract |
| Tract 6937 | 8th | $131,250±$18,094 · within the margin of this tract |
| Tract 7026 | 9th | $130,357±$22,625 · within the margin of this tract |
| Tract 7021 | 10th | $128,750±$20,957 |
| Tract 7141.04 | 11th | $127,375±$34,684 · within the margin of this tract |
| Tract 7161.02 | 12th | $125,640±$23,886 · within the margin of this tract |
| Tract 7071 | 13th | $123,938±$9,792 · within the margin of this tract |
"Within the margin": the two incomes differ by less than their combined 90% margins, so the survey cannot say which is higher and the ranks between them are not firm.
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · How ranks are computed
How reliable are the figures for Census Tract 7021?
1 of the 18 figures for Census Tract 7021 on this page carries a coefficient of variation over 40% and is marked with a ring: they come from a small sample, so read them as rough.
A census tract's figures rest on a few hundred sampled households over five years, so its margins are wider than a city's. Two tracts differ only when the gap between them is larger than their combined 90% margin (the square root of the sum of the two squared margins). 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 · Check it at data.census.gov
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections