Data / Rankings / Natural change, July to June / Counties in Connecticut

Counties in Connecticut by natural change, July to June

Western Connecticut Planning Region had the highest natural change, July to June of 9 counties in 2024, at 1,657. Lower Connecticut River Valley Planning Region had the lowest, at -365. The median was -15 and the figure for Connecticut was 1,701. Source: the U.S. Census Bureau.

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Highest1,657Western Connecticut Planning Region
Lowest-365Lower Connecticut River Valley Planning Region
Median-159 counties
Connecticut1,701History

Map of counties, 2024

Capitol Planning Region: -11 personsGreater Bridgeport Planning Region: 975 personsLower Connecticut River Valley Planning Region: -365 personsNaugatuck Valley Planning Region: 26 personsNortheastern Connecticut Planning Region: -90 personsNorthwest Hills Planning Region: -268 personsSouth Central Connecticut Planning Region: -15 personsSoutheastern Connecticut Planning Region: -208 personsWestern Connecticut Planning Region: 1,657 persons
  • Under -230
  • -230 to -70
  • -70 to 0
  • 0 to 660
  • 660 to 1,200
  • 1,200 and over
persons, 2024. Red areas are below zero and blue areas above it. Source: U.S. Census Bureau, Population Estimates Program: natural change (births minus deaths), 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, 2024

Western Connecticut Planning Region: 1,657 personsWestern Connecticut Planning Regi…1,657Greater Bridgeport Planning Region: 975 personsGreater Bridgeport Planning Region975Naugatuck Valley Planning Region: 26 personsNaugatuck Valley Planning Region26Capitol Planning Region: -11 personsCapitol Planning Region-11South Central Connecticut Planning Region: -15 personsSouth Central Connecticut Plannin…-15Northeastern Connecticut Planning Region: -90 personsNortheastern Connecticut Planning…-90Southeastern Connecticut Planning Region: -208 personsSoutheastern Connecticut Planning…-208Northwest Hills Planning Region: -268 personsNorthwest Hills Planning Region-268Lower Connecticut River Valley Planning Region: -365 personsLower Connecticut River Valley Pl…-365Western Connecticut Planning Region: 1,657 personsWestern Connecticut Planning Region1,657Greater Bridgeport Planning Region: 975 personsGreater Bridgeport Planning Region975Naugatuck Valley Planning Region: 26 personsNaugatuck Valley Planning Region26Capitol Planning Region: -11 personsCapitol Planning Region-11South Central Connecticut Planning Region: -15 personsSouth Central Connecticut Planning Region-15Northeastern Connecticut Planning Region: -90 personsNortheastern Connecticut Planning Region-90Southeastern Connecticut Planning Region: -208 personsSoutheastern Connecticut Planning Region-208Northwest Hills Planning Region: -268 personsNorthwest Hills Planning Region-268Lower Connecticut River Valley Planning Region: -365 personsLower Connecticut River Valley Planning Region-365
persons. Source: U.S. Census Bureau, Population Estimates Program: natural change (births minus deaths), 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

RankCounties2024
persons		Change on 2023
1Western Connecticut Planning Region Estimated1,657+2.2%
2Greater Bridgeport Planning Region Estimated975+4.8%
3Naugatuck Valley Planning Region Estimated26-82.8%
4Capitol Planning Region Estimated-11-107%
5South Central Connecticut Planning Region Estimated-15-108.9%
6Northeastern Connecticut Planning Region Estimated-90+2.2%
7Southeastern Connecticut Planning Region Estimated-208+17.5%
8Northwest Hills Planning Region Estimated-268-19.6%
9Lower Connecticut River Valley Planning Region Estimated-365+7.1%

Other periods

About this ranking

Estimated births minus deaths of residents from July 1 of the previous year through June 30 of the reported year. A negative value means more deaths than births.

Equals births_july_june minus deaths_july_june for the same place and year. Not a calendar-year figure.

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: natural change (births minus deaths), 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: natural change (births minus deaths), 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 natural change, July to June, 2024) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html

MLA 9

Population Estimates Program: natural change (births minus deaths), 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 natural change, July to June, 2024. U.S. Census Bureau, 26 Mar. 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/natural-change-july-june/connecticut-counties?period=2024. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program: natural change (births minus deaths), 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 natural change, July to June, 2024. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/natural-change-july-june/connecticut-counties?period=2024.

Harvard

U.S. Census Bureau (2026) Population Estimates Program: natural change (births minus deaths), 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 natural change, July to June, 2024 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/natural-change-july-june/connecticut-counties?period=2024 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_connecticut_by_2024,
  author = {{U.S. Census Bureau}},
  title = {{Population Estimates Program: natural change (births minus deaths), 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 natural change, July to June, 2024}},
  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/natural-change-july-june/connecticut-counties?period=2024. Publisher attribution: U.S. Census Bureau. Population Estimates Program: natural change (births minus deaths), 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: natural change (births minus deaths), 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 natural change, July to June, 2024
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/natural-change-july-june/connecticut-counties?period=2024
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/natural-change-july-june/connecticut-counties?period=2024.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program: natural change (births minus deaths), 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 natural change, July to June using official data, and cite the source.
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Questions

Which county has the highest natural change, July to June?

Western Connecticut Planning Region, with 1,657 in 2024, according to the U.S. Census Bureau.

Which county has the lowest natural change, July to June?

Lower Connecticut River Valley Planning Region, with -365 in 2024.

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: natural change (births minus deaths), 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.

Natural change, July to June: other rankings

Counties in Connecticut: more rankings