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

Counties in Connecticut by net domestic migration, July to June

Capitol Planning Region had the highest net domestic migration, July to June of 9 counties in 2021, at 6,119. Greater Bridgeport Planning Region had the lowest, at 590. The median was 2,346 and the figure for Connecticut was 20,664. Source: the U.S. Census Bureau.

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Highest6,119Capitol Planning Region
Lowest590Greater Bridgeport Planning Region
Median2,3469 counties
Connecticut20,664History

Map of counties, 2021

Capitol Planning Region: 6,119 personsGreater Bridgeport Planning Region: 590 personsLower Connecticut River Valley Planning Region: 2,555 personsNaugatuck Valley Planning Region: 2,481 personsNortheastern Connecticut Planning Region: 606 personsNorthwest Hills Planning Region: 994 personsSouth Central Connecticut Planning Region: 3,670 personsSoutheastern Connecticut Planning Region: 1,303 personsWestern Connecticut Planning Region: 2,346 persons
  • Under 840
  • 840 to 1,500
  • 1,500 to 2,500
  • 2,500 to 3,000
  • 3,000 and over
persons, 2021. 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, 2021

Capitol Planning Region: 6,119 personsCapitol Planning Region6,119South Central Connecticut Planning Region: 3,670 personsSouth Central Connecticut Plannin…3,670Lower Connecticut River Valley Planning Region: 2,555 personsLower Connecticut River Valley Pl…2,555Naugatuck Valley Planning Region: 2,481 personsNaugatuck Valley Planning Region2,481Western Connecticut Planning Region: 2,346 personsWestern Connecticut Planning Regi…2,346Southeastern Connecticut Planning Region: 1,303 personsSoutheastern Connecticut Planning…1,303Northwest Hills Planning Region: 994 personsNorthwest Hills Planning Region994Northeastern Connecticut Planning Region: 606 personsNortheastern Connecticut Planning…606Greater Bridgeport Planning Region: 590 personsGreater Bridgeport Planning Region590Capitol Planning Region: 6,119 personsCapitol Planning Region6,119South Central Connecticut Planning Region: 3,670 personsSouth Central Connecticut Planning Region3,670Lower Connecticut River Valley Planning Region: 2,555 personsLower Connecticut River Valley Planning Region2,555Naugatuck Valley Planning Region: 2,481 personsNaugatuck Valley Planning Region2,481Western Connecticut Planning Region: 2,346 personsWestern Connecticut Planning Region2,346Southeastern Connecticut Planning Region: 1,303 personsSoutheastern Connecticut Planning Region1,303Northwest Hills Planning Region: 994 personsNorthwest Hills Planning Region994Northeastern Connecticut Planning Region: 606 personsNortheastern Connecticut Planning Region606Greater Bridgeport Planning Region: 590 personsGreater Bridgeport Planning Region590
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

RankCounties2021
persons
1Capitol Planning Region Estimated6,119
2South Central Connecticut Planning Region Estimated3,670
3Lower Connecticut River Valley Planning Region Estimated2,555
4Naugatuck Valley Planning Region Estimated2,481
5Western Connecticut Planning Region Estimated2,346
6Southeastern Connecticut Planning Region Estimated1,303
7Northwest Hills Planning Region Estimated994
8Northeastern Connecticut Planning Region Estimated606
9Greater Bridgeport Planning Region Estimated590

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, 2021) [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, 2021. 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?period=2021. 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, 2021. 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?period=2021.

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, 2021 [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?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_connecticut_by_2021,
  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, 2021}},
  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?period=2021. 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, 2021
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?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/net-domestic-migration-july-june/connecticut-counties?period=2021.
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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Questions

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

Capitol Planning Region, with 6,119 in 2021, according to the U.S. Census Bureau.

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

Greater Bridgeport Planning Region, with 590 in 2021.

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