Data / Rankings / Net domestic migration, July to June / Counties in Connecticut

Counties in Connecticut by net domestic migration, July to June, 2025

Northeastern Connecticut Planning Region had the highest net domestic migration, July to June of 9 counties in 2025, at 446. Western Connecticut Planning Region had the lowest, at -3,667. The median was 175 and the figure for Connecticut was -5,945. Source: the U.S. Census Bureau.

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Highest446Northeastern Connecticut Planning Region
Lowest-3,667Western Connecticut Planning Region
Median1759 counties
Connecticut-5,945History

Map of counties, 2025

Capitol Planning Region: -105 personsGreater Bridgeport Planning Region: -2,044 personsLower Connecticut River Valley Planning Region: 197 personsNaugatuck Valley Planning Region: 175 personsNortheastern Connecticut Planning Region: 446 personsNorthwest Hills Planning Region: 367 personsSouth Central Connecticut Planning Region: -1,672 personsSoutheastern Connecticut Planning Region: 358 personsWestern Connecticut Planning Region: -3,667 persons
  • Under -2,000
  • -2,000 to -1,700
  • -1,700 to 0
  • 0 to 250
  • 250 to 360
  • 360 and over
persons, 2025. Red areas are below zero and blue areas above it. Source: U.S. Census Bureau, Population Estimates Program: net domestic migration, states and counties, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2025

Northeastern Connecticut Planning Region: 446 personsNortheastern Connecticut Planning…446Northwest Hills Planning Region: 367 personsNorthwest Hills Planning Region367Southeastern Connecticut Planning Region: 358 personsSoutheastern Connecticut Planning…358Lower Connecticut River Valley Planning Region: 197 personsLower Connecticut River Valley Pl…197Naugatuck Valley Planning Region: 175 personsNaugatuck Valley Planning Region175Capitol Planning Region: -105 personsCapitol Planning Region-105South Central Connecticut Planning Region: -1,672 personsSouth Central Connecticut Plannin…-1,672Greater Bridgeport Planning Region: -2,044 personsGreater Bridgeport Planning Region-2,044Western Connecticut Planning Region: -3,667 personsWestern Connecticut Planning Regi…-3,667Northeastern Connecticut Planning Region: 446 personsNortheastern Connecticut Planning Region446Northwest Hills Planning Region: 367 personsNorthwest Hills Planning Region367Southeastern Connecticut Planning Region: 358 personsSoutheastern Connecticut Planning Region358Lower Connecticut River Valley Planning Region: 197 personsLower Connecticut River Valley Planning Region197Naugatuck Valley Planning Region: 175 personsNaugatuck Valley Planning Region175Capitol Planning Region: -105 personsCapitol Planning Region-105South Central Connecticut Planning Region: -1,672 personsSouth Central Connecticut Planning Region-1,672Greater Bridgeport Planning Region: -2,044 personsGreater Bridgeport Planning Region-2,044Western Connecticut Planning Region: -3,667 personsWestern Connecticut Planning Region-3,667
persons. Source: U.S. Census Bureau, Population Estimates Program: net domestic migration, states and counties, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Retrieved 2026-10-12.

Full ranking

RankCounties2025
persons		Change on 2024
1Northeastern Connecticut Planning Region Estimated446-42.9%
2Northwest Hills Planning Region Estimated367-19.7%
3Southeastern Connecticut Planning Region Estimated358-69.5%
4Lower Connecticut River Valley Planning Region Estimated197-19.3%
5Naugatuck Valley Planning Region Estimated175-80.3%
6Capitol Planning Region Estimated-105+81.8%
7South Central Connecticut Planning Region Estimated-1,672-66.4%
8Greater Bridgeport Planning Region Estimated-2,044-17.4%
9Western Connecticut Planning Region Estimated-3,667+9.3%

Other periods

About this ranking

Estimated moves into an area from elsewhere in the same country minus moves out to the rest of the country, from July 1 of the previous year through June 30 of the reported year.

More on how it is measured
  • United States: states and counties.
  • Canada: provinces and territories, net interprovincial migration (Statistics Canada).
  • United Kingdom: local authorities, counting moves between any two UK local authorities, including across the borders of England, Wales, Scotland and Northern Ireland (ONS internal migration).
  • A negative value means more people left than arrived.

Sums to zero, or close to it, for each country as a whole, so there is no national value.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Population Estimates Program: net domestic migration, states and counties, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). Population Estimates Program: net domestic migration, states and counties, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021 (Counties in Connecticut by net domestic migration, July to June, 2025) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html

MLA 9

Population Estimates Program: net domestic migration, states and counties, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021, Counties in Connecticut by net domestic migration, July to June, 2025. U.S. Census Bureau, 26 Mar. 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/net-domestic-migration-july-june/connecticut-counties. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program: net domestic migration, states and counties, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Counties in Connecticut by net domestic migration, July to June, 2025. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/net-domestic-migration-july-june/connecticut-counties.

Harvard

U.S. Census Bureau (2026) Population Estimates Program: net domestic migration, states and counties, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021, Counties in Connecticut by net domestic migration, July to June, 2025 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/net-domestic-migration-july-june/connecticut-counties (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_connecticut_by_2025,
  author = {{U.S. Census Bureau}},
  title = {{Population Estimates Program: net domestic migration, states and counties, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021: Counties in Connecticut by net domestic migration, July to June, 2025}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.census.gov/programs-surveys/popest/data/data-sets.html},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/net-domestic-migration-july-june/connecticut-counties. Publisher attribution: U.S. Census Bureau. Population Estimates Program: net domestic migration, states and counties, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Population Estimates Program: net domestic migration, states and counties, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021: Counties in Connecticut by net domestic migration, July to June, 2025
PY  - 2026
DA  - 2026/03/26
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www.census.gov/programs-surveys/popest/data/data-sets.html
L2  - https://invokely.ai/rankings/net-domestic-migration-july-june/connecticut-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/net-domestic-migration-july-june/connecticut-counties.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program: net domestic migration, states and counties, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
ER  -
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Rank Counties in Connecticut by net domestic migration, July to June using official data, and cite the source.
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Questions

Which county has the highest net domestic migration, July to June?

Northeastern Connecticut Planning Region, with 446 in 2025, according to the U.S. Census Bureau.

Which county has the lowest net domestic migration, July to June?

Western Connecticut Planning Region, with -3,667 in 2025.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program: net domestic migration, states and counties, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Retrieved 2026-10-12.

Net domestic migration, July to June: other rankings

Counties in Connecticut: more rankings