Data / Rankings / Uninsured rate, ages 19 to 34 (US, ACS) / Counties in Massachusetts

Counties in Massachusetts by uninsured rate, ages 19 to 34 (US, ACS), 2024

Nantucket County had the highest uninsured rate, ages 19 to 34 (US, ACS) of 14 counties in 2024, at 15.6%. Berkshire County had the lowest, at 3.1%. The median was 4.8% and the figure for Massachusetts was 4.5%. Source: the U.S. Census Bureau.

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Highest15.6Nantucket County
Lowest3.1Berkshire County
Median4.814 counties
Massachusetts4.5History

Map of counties, 2024

Barnstable County: 6 %Berkshire County: 3.1 %Bristol County: 6.4 %Dukes County: 6.6 %Essex County: 5.4 %Franklin County: 4.3 %Hampden County: 5.4 %Hampshire County: 3.1 %Middlesex County: 3.9 %Nantucket County: 15.6 %Norfolk County: 3.8 %Plymouth County: 4.6 %Suffolk County: 3.9 %Worcester County: 4.9 %
  • Under 3.9
  • 3.9 to 4.4
  • 4.4 to 5.3
  • 5.3 to 6.1
  • 6.1 and over
%, 2024. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2024

Nantucket County: 15.6 %Nantucket County15.6Dukes County: 6.6 %Dukes County6.6Bristol County: 6.4 %Bristol County6.4Barnstable County: 6 %Barnstable County6Hampden County: 5.4 %Hampden County5.4Essex County: 5.4 %Essex County5.4Worcester County: 4.9 %Worcester County4.9Plymouth County: 4.6 %Plymouth County4.6Franklin County: 4.3 %Franklin County4.3Suffolk County: 3.9 %Suffolk County3.9Middlesex County: 3.9 %Middlesex County3.9Norfolk County: 3.8 %Norfolk County3.8Hampshire County: 3.1 %Hampshire County3.1Berkshire County: 3.1 %Berkshire County3.1Nantucket County: 15.6 %Nantucket County15.6Dukes County: 6.6 %Dukes County6.6Bristol County: 6.4 %Bristol County6.4Barnstable County: 6 %Barnstable County6Hampden County: 5.4 %Hampden County5.4Essex County: 5.4 %Essex County5.4Worcester County: 4.9 %Worcester County4.9Plymouth County: 4.6 %Plymouth County4.6Franklin County: 4.3 %Franklin County4.3Suffolk County: 3.9 %Suffolk County3.9Middlesex County: 3.9 %Middlesex County3.9Norfolk County: 3.8 %Norfolk County3.8Hampshire County: 3.1 %Hampshire County3.1Berkshire County: 3.1 %Berkshire County3.1
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2024 (%)Change on 2023
1Nantucket County15.6+3.2 pts
2Dukes County6.6-6.4 pts
3Bristol County6.4+0.4 pts
4Barnstable County6+0.2 pts
5Hampden County5.4-0.6 pts
6Essex County5.4-0.6 pts
7Worcester County4.9-0.1 pts
8Plymouth County4.6+0.3 pts
9Franklin County4.3-0.4 pts
10Suffolk County3.9-0.4 pts
11Middlesex County3.9-0 pts
12Norfolk County3.8-0.1 pts
13Hampshire County3.1-0.7 pts
14Berkshire County3.1-0.7 pts

Other periods

About this ranking

People aged 19 to 34 without health insurance coverage of any kind, as a percentage of the civilian noninstitutionalized population aged 19 to 34. 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 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, 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 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs (Counties in Massachusetts by uninsured rate, ages 19 to 34 (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 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs, Counties in Massachusetts by uninsured rate, ages 19 to 34 (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-19-34/massachusetts-counties. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs. Counties in Massachusetts by uninsured rate, ages 19 to 34 (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-19-34/massachusetts-counties.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs, Counties in Massachusetts by uninsured rate, ages 19 to 34 (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-19-34/massachusetts-counties (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_massachusetts_by_2024,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs: Counties in Massachusetts by uninsured rate, ages 19 to 34 (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-19-34/massachusetts-counties. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, 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 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs: Counties in Massachusetts by uninsured rate, ages 19 to 34 (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-19-34/massachusetts-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-19-34/massachusetts-counties.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, 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 Massachusetts by uninsured rate, ages 19 to 34 (US, ACS) using official data, and cite the source.
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Questions

Which county has the highest uninsured rate, ages 19 to 34 (US, ACS)?

Nantucket County, with 15.6% in 2024, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, ages 19 to 34 (US, ACS)?

Berkshire County, with 3.1% 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 B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs. Retrieved 2026-10-12.

Uninsured rate, ages 19 to 34 (US, ACS): other rankings

Counties in Massachusetts: more rankings