Data / Rankings / Median age / Counties in Connecticut

Counties in Connecticut by median age

Lower Connecticut River Valley Planning Region had the highest median age of 9 counties in 2022, at 45.6 years. Capitol Planning Region had the lowest, at 39.8 years. The median was 41.1 years and the figure for Connecticut was 40.9 years. Source: the U.S. Census Bureau.

Highest45.6Lower Connecticut River Valley Planning Region
Lowest39.8Capitol Planning Region
Median41.19 counties
Connecticut40.9History

All counties, 2022

CSVChart (SVG)

Lower Connecticut River Valley Pl…Lower Connecticut River Valley Planning Region: 45.6 years45.6Northwest Hills Planning RegionNorthwest Hills Planning Region: 45.1 years45.1Northeastern Connecticut Planning…Northeastern Connecticut Planning Region: 41.7 years41.7Southeastern Connecticut Planning…Southeastern Connecticut Planning Region: 41.6 years41.6Naugatuck Valley Planning RegionNaugatuck Valley Planning Region: 41.1 years41.1Western Connecticut Planning Regi…Western Connecticut Planning Region: 41.1 years41.1Greater Bridgeport Planning RegionGreater Bridgeport Planning Region: 40.5 years40.5South Central Connecticut Plannin…South Central Connecticut Planning Region: 39.9 years39.9Capitol Planning RegionCapitol Planning Region: 39.8 years39.8
years. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2022
years
1Lower Connecticut River Valley Planning Region45.6
2Northwest Hills Planning Region45.1
3Northeastern Connecticut Planning Region41.7
4Southeastern Connecticut Planning Region41.6
5Naugatuck Valley Planning Region41.1
5Western Connecticut Planning Region41.1
7Greater Bridgeport Planning Region40.5
8South Central Connecticut Planning Region39.9
9Capitol Planning Region39.8

Other periods

About this ranking

Age that divides the resident population into two halves of equal size. Spain and the EU: on 1 January. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

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. American Community Survey 5-year estimates, table B01002: median age, total population. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b01002.dat. Retrieved 2026-10-08.

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Questions

Which county has the highest median age?

Lower Connecticut River Valley Planning Region, with 45.6 years in 2022, according to the U.S. Census Bureau.

Which county has the lowest median age?

Capitol Planning Region, with 39.8 years in 2022.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B01002: median age, total population. Retrieved 2026-10-08.

Median age: other rankings

Counties in Connecticut: more rankings