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Southeastern Connecticut Planning Region, CT: population growth, jobs and income

Southeastern Connecticut Planning Region gained 844 residents between 2024 and 2025 (+0.3%).

Southeastern Connecticut Planning Region had an estimated 284,015 residents in 2025, up 2.0% (5,632 more people) since 2020. That is slower than Connecticut as a whole (+3.0%), and the 9th fastest growth of 9 counties in Connecticut.

Data as of 2025 · updated

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Data file: the tables in CSV and Excel, no PDF. 3 counties: adds Suffolk County and Capitol Planning Region.

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In the Southeastern Connecticut Planning Region report

One-time $99 PDF: everything on this page for Southeastern Connecticut Planning Region plus 14 more figures, ranked against Connecticut and the U.S. Three of the 14, free:

  • Median gross rent$1,365/mo2020–24
  • Vacant homes, incl. seasonal and second homes8.4%2020–24
  • New homes permitted, last 12 months497Oct 2025 – Sep 2026
  • Permits in 5+ unit buildingsIn the report
  • IRS income moving in (net AGI)In the report
  • IRS net movers: people, households and rateIn the report
  • Households and housing unitsIn the report
  • Homes built since 2010, share of all homesIn the report
  • Private business establishmentsIn the report
  • Residents who moved in; 3-year net migration rateIn the report

What's inside: 5 pages

  1. 1 Summary, headline numbers and ranks (free preview)
  2. 2 Ranks and the neighbouring-county table
  3. 3 Migration, with IRS mover and income flows
  4. 4 Rent, vacant homes, permits and employers
  5. 5 Every source and the methods
See every page of a sample report

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Headline numbers

What the numbers say

Net domestic migration added 358 people in 2025: more people moved in from other U.S. counties than moved out. Counting international arrivals, net migration was about +1,000.

Private employers had 100,654 paid employees in mid-March 2023 (County Business Patterns).

Unemployment averaged 3.9% in 2025, 0.3 points higher than in 2019 (before the pandemic).

Builders were authorized to start 440 new homes in 2025, or 1.5 per 1,000 residents.

Median household income was $86,586 in the 2020–24 American Community Survey.

Across the 3,107 U.S. counties with a comparable estimate, its population growth ranks 1,270th.

Part of the Norwich-New London-Willimantic, CT metro area.

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Southeastern Connecticut Planning Region population by year

Resident population, July 1 estimate (Census Bureau)
YearPopulationChange
2025284,015+844
2024283,171+2,395
2023280,776+1,281
2022279,495−101
2021279,596+1,213
2020278,383–

Census Bureau population estimates, July 1 of each year.

What drove the change in Southeastern Connecticut Planning Region

Southeastern Connecticut Planning Region grew by 5,632 people since 2020; the largest part came from international migration (+4,474).

Components of population change, people (Census Bureau)
Component20252020–25Share
Natural changebirths minus deaths−176−1,665
International migrationfrom and to other countries+642+4,474
Domestic migrationfrom and to other U.S. counties+358+2,833
Census adjustmentbalancing residual+20−10
Total change+844+5,632

Census Bureau population estimates, components of change, each year July 1 to June 30. The components add up to the change in the estimate; the Census adjustment is the small balancing figure the Bureau publishes.

How it ranks

How Southeastern Connecticut Planning Region ranks
MeasureIn ConnecticutAmong U.S. counties
Population growth9th of 91,270th of 3,107
Net domestic migration per 1,000 residents3rd of 91,691st of 3,108
Median household income8th of 9386th of 3,107
Lowest unemployment rate4th of 91,384th of 3,108
New homes permitted per 1,000 residents6th of 91,771st of 3,005

1st = highest (lowest for unemployment). Counties are ranked only against others with a figure for the same period.

Get the county report — $99

The County Growth and Demographics Report for Southeastern Connecticut Planning Region, CT as a PDF, from federal data: population and migration, housing and rents, permits, private employers and jobs, unemployment, ranks in the state and the country, and neighbouring counties, with a source next to every number. It has everything on this page plus 14 more figures for Southeastern Connecticut Planning Region, ranked against Connecticut and the U.S. Pay once, no subscription.

Add 2 neighbouring counties for $50: the Suffolk County and Capitol Planning Region reports too, $149 for all 3.

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Neighbouring counties

Over 2020–25, Southeastern Connecticut Planning Region's population change (+2.0%) was ahead of 2 of its 5 neighbouring counties and behind 3.

Its median household income ($86,586, 2020–24) is lower than in all 5 of its neighbouring counties.

Southeastern Connecticut Planning Region, CT and its 5 neighbouring counties: public federal figures
CountyPopulation2025Population change2020–25Net domestic migration per 1,000 residents2025Homes permitted per 1,000 residents2025Median household income2020–24
Southeastern Connecticut Planning Region, CT This county284,015+2.0%1.31.5$86,586
Northeastern Connecticut Planning Region, CT98,096+3.0%4.51.9$90,589
Lower Connecticut River Valley Planning Region, CT177,311+2.3%1.12.0$104,428
Washington County, RI129,795+0.0%1.52.0$106,638
Capitol Planning Region, CT994,115+3.1%−0.11.2$93,394
Suffolk County, NY1,546,090+1.6%−2.80.9$130,686

Census Bureau population estimates and building permits, American Community Survey 5-year income. Rates per 1,000 residents. – means no figure, or a base too small for a change or rate (it would swing on a few people). A figure from another period shows its year and is left out of the comparison.

All 9 Connecticut counties · Every state

Questions

Is Southeastern Connecticut Planning Region growing?

Yes. Its population grew 2.0% between 2020 and 2025, about 5,632 more people (Census Bureau population estimates). Most recently, between 2024 and 2025 it gained 844 residents (+0.3%). Connecticut as a whole changed +3.0% over the same years. That ranks 9th of 9 counties in Connecticut for population growth.

How many people moved to Southeastern Connecticut Planning Region?

On net, about 358 people in 2025: that many more moved in from other U.S. counties than moved out (Census Bureau net domestic migration estimate). Counting international arrivals, net migration was about +1,000.

What is the unemployment rate in Southeastern Connecticut Planning Region?

It averaged 3.9% in 2025 (BLS Local Area Unemployment Statistics, annual average).

What is the population of Southeastern Connecticut Planning Region?

About 284,015 people, according to the U.S. Census Bureau's population estimate for July 1, 2025.

How many jobs are in Southeastern Connecticut Planning Region?

Private employers there had 100,654 paid employees in mid-March 2023 (Census Bureau County Business Patterns; government jobs and the self-employed are not counted).

What Beacon CRE covers in Connecticut

Map, parcel and listing layers cover North and South Carolina only for now. This page and the other Connecticut county pages carry the public federal growth figures.

See the Carolinas map

Southeastern Connecticut Planning Region data alerts

Email me when Southeastern Connecticut Planning Region gets new Census numbers: population, building permits, jobs and income. About 4 emails a year, one click to stop.

We use your address only to email you when new data for Southeastern Connecticut Planning Region is out: what changed, with a link to that county's report. No newsletter, no other sales emails. Delete it any time with the link in every email. We'll email you a link to confirm first; nothing starts until you click it. Privacy notice.

Sources and method

Each number shows its own period. Changes compare the latest period with five years earlier (or the earliest period available). Beacon CRE last refreshed these figures on 2026-11-05. Figures come from public federal statistics and are informational only, not investment advice. Check the source before relying on a number. Methodology: how we compute every number. More on every layer: data sources and licences.

Jobs outside North and South Carolina use County Business Patterns (paid private-sector employees in mid-March); wages and government jobs are not included.