County · Connecticut
Southeastern Connecticut Planning Region, Connecticut
Southeastern Connecticut Planning Region, Connecticut. Southeastern Connecticut Planning Region had 284,015 residents in 2025 by the Census Bureau's estimate, up 1.3% since 2020, slower than Connecticut (+2.2%). It holds 39 places (6 cities, villages and boroughs, 17 towns and townships and 16 census-designated) and 68 census tracts. GEOID 09180.
Southeastern Connecticut Planning Region is the county of the Norwich-New London-Willimantic, CT metropolitan statistical area (the Census Bureau's July 2023 delineation).
Residents, July 2025 estimate
284,015
Census Bureau estimate (no margin published)
2020 Census count: 280,430 · ACS 2020-2024: 279,971
Median household income
$86,586
±$1,937 (90% margin)
Connecticut: $95,781
Median home value
$323,400
±$5,559 (90% margin)
Connecticut: $366,900
Median gross rent
$1,365
±$26 (90% margin)
Connecticut: $1,488
How many people live in Southeastern Connecticut Planning Region, and is it growing?
The 2020 Census counted 280,430 residents in Southeastern Connecticut Planning Region. The Census Bureau estimates 284,015 for July 1, 2025, up 1.3% since 2020, slower than Connecticut (+2.2%). The 2020-2024 American Community Survey puts the population at 279,971 over 598 square miles of land.
| Measure | Southeastern Connecticut Planning Region | Connecticut | Change since 2015-2019 |
|---|---|---|---|
| Total population | 279,971 | 3,624,508 | – |
| Households | 115,768±890 | 1,434,007 | – |
| Average household size | 2.32±0.02 | 2.46 | – |
| Housing units | 126,425±110 | 1,541,822 | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Southeastern Connecticut Planning Region?
Southeastern Connecticut Planning Region holds 39 places: 6 cities, villages and boroughs (incorporated places), 17 towns and townships (county subdivisions with their own government) and 16 census-designated places. The largest is Norwich with 40,001 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Norwich | 40,125 | $65,024 |
|---|---|---|
| Groton | 38,411 | $88,284 |
| New London | 27,367 | $59,098 |
| Windham | 24,425 | $55,736 |
| Waterford | 19,571 | $104,820 |
| East Lyme | 18,693 | $105,044 |
| Montville | 18,387 | $96,454 |
| Stonington | 18,335 | $114,797 |
| Willimantic | 18,149 | $45,962 |
| Colchester | 15,555 | $122,390 |
| Ledyard | 15,413 | $107,975 |
| Griswold | 11,402 | $78,719 |
| Groton city | 9,387 | $79,577 |
| Conning Towers-Nautilus Park | 8,870 | $81,694 |
| Lebanon | 7,142 | $109,135 |
| Pawcatuck | 5,433 | $80,114 |
| North Stonington | 5,149 | $123,938 |
| Preston | 4,788 | $116,648 |
| Colchester CDP | 4,700 | $86,760 |
| Mystic | 4,348 | $152,559 |
| Salem | 4,213 | $123,245 |
| Lisbon | 4,195 | $92,708 |
| Long Hill (Southeastern Connecticut County) | 3,948 | $84,201 |
| Old Mystic | 3,493 | $130,903 |
| Jewett City | 3,328 | $55,530 |
| Niantic | 3,194 | $81,250 |
| Waterford CDP | 3,074 | $73,156 |
| Sprague | 2,967 | $92,850 |
| Oxoboxo River | 2,955 | $69,167 |
| Bozrah | 2,429 | $108,516 |
| Franklin | 1,863 | $105,000 |
| Poquonock Bridge | 1,686 | $36,940 |
| Noank | 1,654 | $143,583 |
| South Windham | 1,383 | $75,045 |
| Baltic | 1,186 | $68,958 |
| Gales FerryGEOID 0930190 | 1,159 | $80,735 |
| Stonington borough | 976 | $109,167 |
| Groton Long Point | 530 | $172,500 |
| MashantucketGEOID 0945995 | 457 | $125,000 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Southeastern Connecticut Planning Region?
The median resident of Southeastern Connecticut Planning Region is 41.1 years old; 19.3% are under 18 and 19.5% are 65 or older. The largest group is non-Hispanic white residents at 70.6%, then Hispanic or Latino residents (of any race) at 15.0%. 8.8% of residents were born outside the United States.
| Measure | Southeastern Connecticut Planning Region | Connecticut | Change since 2015-2019 |
|---|---|---|---|
| Median age | 41.1±0.3 | 41.1 | – |
| Under 18 years | 19.3% | 20.2% | – |
| 65 years and over | 19.5% | 18.5% | – |
| Hispanic or Latino (any race) | 15.0% | 18.3% | – |
| White alone, not Hispanic | 70.6%±0.3 pts | 61.9% | – |
| Black or African American alone, not Hispanic | 4.9%±0.3 pts | 9.8% | – |
| Asian alone, not Hispanic | 3.7%±0.1 pts | 4.7% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.3%±0.1 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 4.8%±0.4 pts | 4.3% | – |
| Some other race alone, not Hispanic | 0.6%±0.2 pts | 0.9% | – |
| Born outside the United States | 8.8%±0.4 pts | 15.7% | – |
| Speak a language other than English at home (age 5+) | 15.3%±0.6 pts | 23.4% | – |
| Civilian veterans (age 18+) | 8.0%±0.5 pts | 4.7% | – |
| With a disability | 14.8%±0.6 pts | 12.2% | – |
| No health insurance coverage | 4.7%±0.4 pts | 5.4% | – |
| High school graduate or higher (age 25+) | 92.8%±0.5 pts | 91.5% | – |
| Bachelor's degree or higher (age 25+) | 35.8%±0.9 pts | 42.5% | – |
| Graduate or professional degree (age 25+) | 16.0%±0.7 pts | 19.2% | – |
| Moved from another state in the past year | 3.3%±0.4 pts | 2.6% | – |
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 Southeastern Connecticut Planning Region earn?
Half of Southeastern Connecticut Planning Region's 115,768 households earn less than $86,586 a year (±$1,937), against $95,781 in Connecticut. 10.7% of residents live below the poverty line.
| Measure | Southeastern Connecticut Planning Region | Connecticut | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $86,586±$1,937 | $95,781 | – |
| Mean household income | $111,769±$2,049 | $138,744 | – |
| Per capita income | $47,133±$810 | $55,915 | – |
| People below the poverty line | 10.7%±0.8 pts | 10.0% | – |
| Children under 18 below the poverty line | 15.1%±2.0 pts | 13.0% | – |
| Households receiving SNAP | 12.4%±0.8 pts | 11.8% | – |
| Households with a broadband subscription | 91.6%±0.7 pts | 92.2% | – |
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 Southeastern Connecticut Planning Region?
Owners occupy 65.1% of Southeastern Connecticut Planning Region's occupied homes and renters 34.9%. The median owner-occupied home is valued at $323,400 by its owner (±$5,559). The median renter pays $1,365 a month including utilities, and 40.7% of renters pay 35% or more of their income on rent.
| Measure | Southeastern Connecticut Planning Region | Connecticut | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $323,400±$5,559 | $366,900 | – |
| Median gross rent | $1,365±$26 | $1,488 | – |
| Renters paying 35% or more of income on rent | 40.7%±2.3 pts | 43.5% | – |
| Median monthly owner costs, with a mortgage | $2,140±$34 | $2,429 | – |
| Owner-occupied homes | 65.1%±1.1 pts | 66.5% | – |
| Housing units | 126,425±110 | 1,541,822 | – |
| Homeowner vacancy rate | 0.6%±0.2 pts | 0.8% | – |
| Rental vacancy rate | 4.4%±1.1 pts | 4.3% | – |
| Single-family detached homes | 61.1%±1.1 pts | 58.6% | – |
| Mobile homes | 2.3%±0.4 pts | 0.7% | – |
| Built 2020 or later | 0.8%±0.2 pts | 0.7% | – |
| Built 1939 or earlier | 23.6%±0.7 pts | 20.2% | – |
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 many new homes is Southeastern Connecticut Planning Region building?
Builders took permits for 440 new housing units across Southeastern Connecticut Planning Region in 2025 (285 single-family), 1.5 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Southeastern Connecticut Planning Region get to work?
75.5% of Southeastern Connecticut Planning Region's workers drive alone and 11.7% work from home. The average trip to work takes 23.9 minutes. The unemployment rate in 2020-2024 averaged 5.0%.
| Measure | Southeastern Connecticut Planning Region | Connecticut | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 64.0%±0.6 pts | 65.9% | – |
| Unemployment rate | 5.0%±0.5 pts | 5.6% | – |
| Drove alone to work | 75.5%±0.9 pts | 68.8% | – |
| Carpooled | 7.0%±0.6 pts | 7.9% | – |
| Public transportation | 1.4%±0.4 pts | 3.3% | – |
| Walked | 2.9%±0.4 pts | 2.5% | – |
| Worked from home | 11.7%±0.7 pts | 16.0% | – |
| Mean travel time to work | 23.9 min±0.4 | 26.5 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 are Southeastern Connecticut Planning Region's census tracts?
Southeastern Connecticut Planning Region is divided into 68 census tracts. Among those with a reliable estimate, median household income runs from $33,091 (Tract 6967.01) to $161,250 (Tract 7030).
All 68 census tracts of Southeastern Connecticut Planning Region, with their figures
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Southeastern Connecticut Planning Region compare with Connecticut's other counties?
| Measure | Rank |
|---|---|
| Population | 6th of 9 |
| Growth 2020-2025 | 9th of 9 |
| Residents per square mile | 6th of 9 |
| Median household income | 8th of 9 |
| Median home value | 7th of 9 |
| Median gross rent | 6th of 9 |
| Poverty rate | 4th of 9 |
| Bachelor's degree or higher | 7th of 9 |
| Median age | 6th of 9 |
Source: PlainCities ranks 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 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 Southeastern Connecticut Planning Region 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.