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 2023, at 1,622. Lower Connecticut River Valley Planning Region had the lowest, at -393. The median was 151 and the figure for Connecticut was 2,068. Source: the U.S. Census Bureau.

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Highest1,622Western Connecticut Planning Region
Lowest-393Lower Connecticut River Valley Planning Region
Median1519 counties
Connecticut2,068History

Map of counties, 2023

Capitol Planning Region: 157 personsGreater Bridgeport Planning Region: 930 personsLower Connecticut River Valley Planning Region: -393 personsNaugatuck Valley Planning Region: 151 personsNortheastern Connecticut Planning Region: -92 personsNorthwest Hills Planning Region: -224 personsSouth Central Connecticut Planning Region: 169 personsSoutheastern Connecticut Planning Region: -252 personsWestern Connecticut Planning Region: 1,622 persons
  • Under -250
  • -250 to -220
  • -220 to 0
  • 0 to 160
  • 160 to 680
  • 680 and over
persons, 2023. 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, 2023

Western Connecticut Planning Region: 1,622 personsWestern Connecticut Planning Regi…1,622Greater Bridgeport Planning Region: 930 personsGreater Bridgeport Planning Region930South Central Connecticut Planning Region: 169 personsSouth Central Connecticut Plannin…169Capitol Planning Region: 157 personsCapitol Planning Region157Naugatuck Valley Planning Region: 151 personsNaugatuck Valley Planning Region151Northeastern Connecticut Planning Region: -92 personsNortheastern Connecticut Planning…-92Northwest Hills Planning Region: -224 personsNorthwest Hills Planning Region-224Southeastern Connecticut Planning Region: -252 personsSoutheastern Connecticut Planning…-252Lower Connecticut River Valley Planning Region: -393 personsLower Connecticut River Valley Pl…-393Western Connecticut Planning Region: 1,622 personsWestern Connecticut Planning Region1,622Greater Bridgeport Planning Region: 930 personsGreater Bridgeport Planning Region930South Central Connecticut Planning Region: 169 personsSouth Central Connecticut Planning Region169Capitol Planning Region: 157 personsCapitol Planning Region157Naugatuck Valley Planning Region: 151 personsNaugatuck Valley Planning Region151Northeastern Connecticut Planning Region: -92 personsNortheastern Connecticut Planning Region-92Northwest Hills Planning Region: -224 personsNorthwest Hills Planning Region-224Southeastern Connecticut Planning Region: -252 personsSoutheastern Connecticut Planning Region-252Lower Connecticut River Valley Planning Region: -393 personsLower Connecticut River Valley Planning Region-393
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

RankCounties2023
persons		Change on 2022
1Western Connecticut Planning Region Estimated1,622+1%
2Greater Bridgeport Planning Region Estimated930-5.1%
3South Central Connecticut Planning Region Estimated169+196.6%
4Capitol Planning Region Estimated157+171%
5Naugatuck Valley Planning Region Estimated151+218.9%
6Northeastern Connecticut Planning Region Estimated-92+56.4%
7Northwest Hills Planning Region Estimated-224+40.9%
8Southeastern Connecticut Planning Region Estimated-252+38.8%
9Lower Connecticut River Valley Planning Region Estimated-393-11.3%

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, 2023) [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, 2023. 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=2023. 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, 2023. 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=2023.

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, 2023 [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=2023 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_connecticut_by_2023,
  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, 2023}},
  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=2023. 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, 2023
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=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/natural-change-july-june/connecticut-counties?period=2023.
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 1,622 in 2023, according to the U.S. Census Bureau.

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

Lower Connecticut River Valley Planning Region, with -393 in 2023.

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