Data / Rankings / Bachelor's degree or higher, population 25 and over / Counties in Connecticut

Counties in Connecticut by share of adults with a bachelor's degree, 2024

Western Connecticut Planning Region had the highest share of adults with a bachelor's degree of 9 counties in 2024, at 55.5%. Northeastern Connecticut Planning Region had the lowest, at 26.1%. The median was 41.7% and the figure for Connecticut was 42.5%. Source: the U.S. Census Bureau.

Highest55.5Western Connecticut Planning Region
Lowest26.1Northeastern Connecticut Planning Region
Median41.79 counties
Connecticut42.5History

All counties, 2024

CSVChart (SVG)

Western Connecticut Planning Regi…Western Connecticut Planning Region: 55.5 %55.5Lower Connecticut River Valley Pl…Lower Connecticut River Valley Planning Region: 46 %46Capitol Planning RegionCapitol Planning Region: 42.1 %42.1South Central Connecticut Plannin…South Central Connecticut Planning Region: 42 %42Greater Bridgeport Planning RegionGreater Bridgeport Planning Region: 41.7 %41.7Northwest Hills Planning RegionNorthwest Hills Planning Region: 39.4 %39.4Southeastern Connecticut Planning…Southeastern Connecticut Planning Region: 35.8 %35.8Naugatuck Valley Planning RegionNaugatuck Valley Planning Region: 33.8 %33.8Northeastern Connecticut Planning…Northeastern Connecticut Planning Region: 26.1 %26.1
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2024 (%)Change on 2023
1Western Connecticut Planning Region55.5+0.5 pts
2Lower Connecticut River Valley Planning Region46+0.5 pts
3Capitol Planning Region42.1+0.6 pts
4South Central Connecticut Planning Region42+1 pts
5Greater Bridgeport Planning Region41.7+0.1 pts
6Northwest Hills Planning Region39.4-0 pts
7Southeastern Connecticut Planning Region35.8+1.2 pts
8Naugatuck Valley Planning Region33.80 pts
9Northeastern Connecticut Planning Region26.1-0.1 pts

Other periods

About this ranking

People aged 25 and over whose highest degree is a bachelor's, master's, professional school or doctorate degree, as a percentage of all people aged 25 and over. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

Excludes associate degrees and college without a degree. Not comparable with EU tertiary attainment, which includes short-cycle tertiary education and usually covers ages 25 to 64. Calculated from counts in ACS table B15003, which are stored as inputs.

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 B15003: population 25 years and over with a bachelor's degree or higher as a percentage of the population 25 years and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat. Retrieved 2026-10-09.

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Questions

Which county has the highest share of adults with a bachelor's degree?

Western Connecticut Planning Region, with 55.5% in 2024, according to the U.S. Census Bureau.

Which county has the lowest share of adults with a bachelor's degree?

Northeastern Connecticut Planning Region, with 26.1% 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, American Community Survey 5-year estimates, table B15003: population 25 years and over with a bachelor's degree or higher as a percentage of the population 25 years and over, calculated with stored inputs. Retrieved 2026-10-09.

Bachelor's degree or higher, population 25 and over: other rankings

Counties in Connecticut: more rankings