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

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

Northeastern Connecticut Planning Region had the highest net domestic migration rate, July to June of 9 counties in 2025, at 4.56 per 1,000 inhabitants. Greater Bridgeport Planning Region had the lowest, at -6.06 per 1,000 inhabitants. The median was 0.38 per 1,000 inhabitants and the figure for Connecticut was -1.61 per 1,000 inhabitants. Source: the U.S. Census Bureau.

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Highest4.56Northeastern Connecticut Planning Region
Lowest-6.06Greater Bridgeport Planning Region
Median0.389 counties
Connecticut-1.61History

Map of counties, 2025

Capitol Planning Region: -0.11 per 1,000 inhabitantsGreater Bridgeport Planning Region: -6.06 per 1,000 inhabitantsLower Connecticut River Valley Planning Region: 1.11 per 1,000 inhabitantsNaugatuck Valley Planning Region: 0.38 per 1,000 inhabitantsNortheastern Connecticut Planning Region: 4.56 per 1,000 inhabitantsNorthwest Hills Planning Region: 3.21 per 1,000 inhabitantsSouth Central Connecticut Planning Region: -2.89 per 1,000 inhabitantsSoutheastern Connecticut Planning Region: 1.26 per 1,000 inhabitantsWestern Connecticut Planning Region: -5.74 per 1,000 inhabitants
  • Under -5.7
  • -5.7 to -2.9
  • -2.9 to 0
  • 0 to 1.2
  • 1.2 to 2.6
  • 2.6 and over
per 1,000 inhabitants, 2025. Red areas are below zero and blue areas above it. Source: U.S. Census Bureau, Population Estimates Program: net domestic migration rate per 1,000 residents, 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: 4.56 per 1,000 inhabitantsNortheastern Connecticut Planning…4.56Northwest Hills Planning Region: 3.21 per 1,000 inhabitantsNorthwest Hills Planning Region3.21Southeastern Connecticut Planning Region: 1.26 per 1,000 inhabitantsSoutheastern Connecticut Planning…1.26Lower Connecticut River Valley Planning Region: 1.11 per 1,000 inhabitantsLower Connecticut River Valley Pl…1.11Naugatuck Valley Planning Region: 0.38 per 1,000 inhabitantsNaugatuck Valley Planning Region0.38Capitol Planning Region: -0.11 per 1,000 inhabitantsCapitol Planning Region-0.11South Central Connecticut Planning Region: -2.89 per 1,000 inhabitantsSouth Central Connecticut Plannin…-2.89Western Connecticut Planning Region: -5.74 per 1,000 inhabitantsWestern Connecticut Planning Regi…-5.74Greater Bridgeport Planning Region: -6.06 per 1,000 inhabitantsGreater Bridgeport Planning Region-6.06Northeastern Connecticut Planning Region: 4.56 per 1,000 inhabitantsNortheastern Connecticut Planning Region4.56Northwest Hills Planning Region: 3.21 per 1,000 inhabitantsNorthwest Hills Planning Region3.21Southeastern Connecticut Planning Region: 1.26 per 1,000 inhabitantsSoutheastern Connecticut Planning Region1.26Lower Connecticut River Valley Planning Region: 1.11 per 1,000 inhabitantsLower Connecticut River Valley Planning Region1.11Naugatuck Valley Planning Region: 0.38 per 1,000 inhabitantsNaugatuck Valley Planning Region0.38Capitol Planning Region: -0.11 per 1,000 inhabitantsCapitol Planning Region-0.11South Central Connecticut Planning Region: -2.89 per 1,000 inhabitantsSouth Central Connecticut Planning Region-2.89Western Connecticut Planning Region: -5.74 per 1,000 inhabitantsWestern Connecticut Planning Region-5.74Greater Bridgeport Planning Region: -6.06 per 1,000 inhabitantsGreater Bridgeport Planning Region-6.06
per 1,000 inhabitants. Source: U.S. Census Bureau, Population Estimates Program: net domestic migration rate per 1,000 residents, 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
per 1,000 inhabitants		Change on 2024
1Northeastern Connecticut Planning Region Estimated4.56-3.48 pts
2Northwest Hills Planning Region Estimated3.21-0.81 pts
3Southeastern Connecticut Planning Region Estimated1.26-2.9 pts
4Lower Connecticut River Valley Planning Region Estimated1.11-0.27 pts
5Naugatuck Valley Planning Region Estimated0.38-1.55 pts
6Capitol Planning Region Estimated-0.11+0.48 pts
7South Central Connecticut Planning Region Estimated-2.89-1.14 pts
8Western Connecticut Planning Region Estimated-5.74+0.64 pts
9Greater Bridgeport Planning Region Estimated-6.06-0.86 pts

Other periods

About this ranking

Net domestic migration into a US state or county from July 1 of the previous year through June 30 of the reported year per 1,000 residents, using the average of the population estimates at the two July 1 endpoints.

Sums to zero for the United States 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 rate per 1,000 residents, 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 rate per 1,000 residents, 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 rate, 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 rate per 1,000 residents, 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 rate, 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-rate-july-june/connecticut-counties. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program: net domestic migration rate per 1,000 residents, 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 rate, 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-rate-july-june/connecticut-counties.

Harvard

U.S. Census Bureau (2026) Population Estimates Program: net domestic migration rate per 1,000 residents, 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 rate, 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-rate-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 rate per 1,000 residents, 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 rate, 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-rate-july-june/connecticut-counties. Publisher attribution: U.S. Census Bureau. Population Estimates Program: net domestic migration rate per 1,000 residents, 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 rate per 1,000 residents, 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 rate, 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-rate-july-june/connecticut-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/net-domestic-migration-rate-july-june/connecticut-counties.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program: net domestic migration rate per 1,000 residents, 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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Questions

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

Northeastern Connecticut Planning Region, with 4.56 per 1,000 inhabitants in 2025, according to the U.S. Census Bureau.

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

Greater Bridgeport Planning Region, with -6.06 per 1,000 inhabitants 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 rate per 1,000 residents, 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 rate, July to June: other rankings

Counties in Connecticut: more rankings