Data / Rankings / Uninsured rate, ages 35 to 64 (US, ACS) / Counties in Connecticut

Counties in Connecticut by uninsured rate, ages 35 to 64 (US, ACS), 2024

Greater Bridgeport Planning Region had the highest uninsured rate, ages 35 to 64 (US, ACS) of 9 counties in 2024, at 11.4%. Lower Connecticut River Valley Planning Region had the lowest, at 4.4%. The median was 5.7% and the figure for Connecticut was 6.8%. Source: the U.S. Census Bureau.

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Highest11.4Greater Bridgeport Planning Region
Lowest4.4Lower Connecticut River Valley Planning Region
Median5.79 counties
Connecticut6.8History

Map of counties, 2024

Capitol Planning Region: 5.3 %Greater Bridgeport Planning Region: 11.4 %Lower Connecticut River Valley Planning Region: 4.4 %Naugatuck Valley Planning Region: 6.6 %Northeastern Connecticut Planning Region: 5.1 %Northwest Hills Planning Region: 5.1 %South Central Connecticut Planning Region: 5.8 %Southeastern Connecticut Planning Region: 5.7 %Western Connecticut Planning Region: 9.3 %
  • Under 5.1
  • 5.1 to 5.4
  • 5.4 to 5.8
  • 5.8 to 7.7
  • 7.7 and over
%, 2024. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2024

Greater Bridgeport Planning Region: 11.4 %Greater Bridgeport Planning Region11.4Western Connecticut Planning Region: 9.3 %Western Connecticut Planning Regi…9.3Naugatuck Valley Planning Region: 6.6 %Naugatuck Valley Planning Region6.6South Central Connecticut Planning Region: 5.8 %South Central Connecticut Plannin…5.8Southeastern Connecticut Planning Region: 5.7 %Southeastern Connecticut Planning…5.7Capitol Planning Region: 5.3 %Capitol Planning Region5.3Northeastern Connecticut Planning Region: 5.1 %Northeastern Connecticut Planning…5.1Northwest Hills Planning Region: 5.1 %Northwest Hills Planning Region5.1Lower Connecticut River Valley Planning Region: 4.4 %Lower Connecticut River Valley Pl…4.4Greater Bridgeport Planning Region: 11.4 %Greater Bridgeport Planning Region11.4Western Connecticut Planning Region: 9.3 %Western Connecticut Planning Region9.3Naugatuck Valley Planning Region: 6.6 %Naugatuck Valley Planning Region6.6South Central Connecticut Planning Region: 5.8 %South Central Connecticut Planning Region5.8Southeastern Connecticut Planning Region: 5.7 %Southeastern Connecticut Planning Region5.7Capitol Planning Region: 5.3 %Capitol Planning Region5.3Northeastern Connecticut Planning Region: 5.1 %Northeastern Connecticut Planning Region5.1Northwest Hills Planning Region: 5.1 %Northwest Hills Planning Region5.1Lower Connecticut River Valley Planning Region: 4.4 %Lower Connecticut River Valley Planning Region4.4
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2024 (%)Change on 2023
1Greater Bridgeport Planning Region11.4+0.6 pts
2Western Connecticut Planning Region9.3-0.2 pts
3Naugatuck Valley Planning Region6.6+0.7 pts
4South Central Connecticut Planning Region5.8-0.5 pts
5Southeastern Connecticut Planning Region5.7+0.4 pts
6Capitol Planning Region5.3+0.3 pts
7Northeastern Connecticut Planning Region5.1+0.1 pts
7Northwest Hills Planning Region5.1-0.3 pts
9Lower Connecticut River Valley Planning Region4.4-0.1 pts

Other periods

About this ranking

People aged 35 to 64 without health insurance coverage of any kind, as a percentage of the civilian noninstitutionalized population aged 35 to 64. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

Coverage is what people reported at the interview, so the five-year figure averages five years of answers. People whose only coverage is the Indian Health Service count as uninsured. Active-duty military and people living in institutions are outside the universe. For single-year model-based county figures under 65, see uninsured_rate_under_65, uninsured_rate_18_64 and uninsured_rate_under_19 (SAHIE), a different source.

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 B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat. 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). American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs (Counties in Connecticut by uninsured rate, ages 35 to 64 (US, ACS), 2024) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat

MLA 9

American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs, Counties in Connecticut by uninsured rate, ages 35 to 64 (US, ACS), 2024. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-35-64/connecticut-counties. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. Counties in Connecticut by uninsured rate, ages 35 to 64 (US, ACS), 2024. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-35-64/connecticut-counties.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs, Counties in Connecticut by uninsured rate, ages 35 to 64 (US, ACS), 2024 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-35-64/connecticut-counties (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_connecticut_by_2024,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs: Counties in Connecticut by uninsured rate, ages 35 to 64 (US, ACS), 2024}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-35-64/connecticut-counties. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs: Counties in Connecticut by uninsured rate, ages 35 to 64 (US, ACS), 2024
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat
L2  - https://invokely.ai/rankings/uninsured-rate-ages-35-64/connecticut-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-35-64/connecticut-counties.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat. Retrieved 2026-10-12.
ER  -
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Rank Counties in Connecticut by uninsured rate, ages 35 to 64 (US, ACS) using official data, and cite the source.
rank_places {"indicator":"uninsured_rate_35_64","level":"province","within":"Connecticut","limit":10}
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Questions

Which county has the highest uninsured rate, ages 35 to 64 (US, ACS)?

Greater Bridgeport Planning Region, with 11.4% in 2024, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, ages 35 to 64 (US, ACS)?

Lower Connecticut River Valley Planning Region, with 4.4% 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 B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. Retrieved 2026-10-12.

Uninsured rate, ages 35 to 64 (US, ACS): other rankings

Counties in Connecticut: more rankings