Counties in Connecticut by birth rate (July to June), 2025

Greater Bridgeport Planning Region had the highest birth rate (July to June) of 9 counties in 2025, at 10.17 per 1,000 inhabitants. Northwest Hills Planning Region had the lowest, at 7.98 per 1,000 inhabitants. The median was 9.27 per 1,000 inhabitants and the figure for Connecticut was 9.43 per 1,000 inhabitants. Source: the U.S. Census Bureau.

Median9.279 counties
Connecticut9.43History

All counties, 2025

CSVChart (SVG)

Greater Bridgeport Planning RegionGreater Bridgeport Planning Region: 10.17 per 1,000 inhabitants10.17Western Connecticut Planning Regi…Western Connecticut Planning Region: 10.1 per 1,000 inhabitants10.1South Central Connecticut Plannin…South Central Connecticut Planning Region: 9.58 per 1,000 inhabitants9.58Naugatuck Valley Planning RegionNaugatuck Valley Planning Region: 9.33 per 1,000 inhabitants9.33Capitol Planning RegionCapitol Planning Region: 9.27 per 1,000 inhabitants9.27Southeastern Connecticut Planning…Southeastern Connecticut Planning Region: 9.09 per 1,000 inhabitants9.09Northeastern Connecticut Planning…Northeastern Connecticut Planning Region: 8.69 per 1,000 inhabitants8.69Lower Connecticut River Valley Pl…Lower Connecticut River Valley Planning Region: 8.08 per 1,000 inhabitants8.08Northwest Hills Planning RegionNorthwest Hills Planning Region: 7.98 per 1,000 inhabitants7.98
per 1,000 inhabitants. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2025
per 1,000 inhabitants
Change on 2024
1Greater Bridgeport Planning Region Estimated10.17-0.18 pts
2Western Connecticut Planning Region Estimated10.1-0.16 pts
3South Central Connecticut Planning Region Estimated9.58+0.01 pts
4Naugatuck Valley Planning Region Estimated9.330 pts
5Capitol Planning Region Estimated9.27+0.03 pts
6Southeastern Connecticut Planning Region Estimated9.09-0.03 pts
7Northeastern Connecticut Planning Region Estimated8.69-0.12 pts
8Lower Connecticut River Valley Planning Region Estimated8.08+0.15 pts
9Northwest Hills Planning Region Estimated7.98+0.08 pts

Other periods

About this ranking

Estimated live births 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.

Published Census population estimates rate. The year identifies the end of the July-to-June period. These estimates can be revised and differ from calendar-year birth rates.

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: birth rate, July 1 of the previous year to June 30 of the reported year, nation, states and counties. https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

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Rank Counties in Connecticut by birth rate (July to June) using official data, and cite the source.
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Questions

Which county has the highest birth rate (July to June)?

Greater Bridgeport Planning Region, with 10.17 per 1,000 inhabitants in 2025, according to the U.S. Census Bureau.

Which county has the lowest birth rate (July to June)?

Northwest Hills Planning Region, with 7.98 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: birth rate, July 1 of the previous year to June 30 of the reported year, nation, states and counties. Retrieved 2026-10-08.

Crude birth rate, July to June: other rankings

Counties in Connecticut: more rankings