Data / Rankings / Uninsured rate, all ages (US) / Counties in Massachusetts

Counties in Massachusetts by uninsured rate, all ages (US)

Dukes County had the highest uninsured rate, all ages (US) of 14 counties in 2022, at 6.5%. Norfolk County had the lowest, at 1.9%. The median was 2.7% and the figure for Massachusetts was 2.7%. Source: the U.S. Census Bureau.

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Highest6.5Dukes County
Lowest1.9Norfolk County
Median2.714 counties
Massachusetts2.7History

Map of counties, 2022

Barnstable County: 3 %Berkshire County: 2.1 %Bristol County: 2.9 %Dukes County: 6.5 %Essex County: 2.9 %Franklin County: 2.2 %Hampden County: 3.1 %Hampshire County: 2 %Middlesex County: 2.5 %Nantucket County: 4.7 %Norfolk County: 1.9 %Plymouth County: 2.4 %Suffolk County: 3.5 %Worcester County: 2.5 %
  • Under 2.2
  • 2.2 to 2.5
  • 2.5 to 2.9
  • 2.9 to 3.3
  • 3.3 and over
%, 2022. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2022

Dukes County: 6.5 %Dukes County6.5Nantucket County: 4.7 %Nantucket County4.7Suffolk County: 3.5 %Suffolk County3.5Hampden County: 3.1 %Hampden County3.1Barnstable County: 3 %Barnstable County3Essex County: 2.9 %Essex County2.9Bristol County: 2.9 %Bristol County2.9Middlesex County: 2.5 %Middlesex County2.5Worcester County: 2.5 %Worcester County2.5Plymouth County: 2.4 %Plymouth County2.4Franklin County: 2.2 %Franklin County2.2Berkshire County: 2.1 %Berkshire County2.1Hampshire County: 2 %Hampshire County2Norfolk County: 1.9 %Norfolk County1.9Dukes County: 6.5 %Dukes County6.5Nantucket County: 4.7 %Nantucket County4.7Suffolk County: 3.5 %Suffolk County3.5Hampden County: 3.1 %Hampden County3.1Barnstable County: 3 %Barnstable County3Essex County: 2.9 %Essex County2.9Bristol County: 2.9 %Bristol County2.9Middlesex County: 2.5 %Middlesex County2.5Worcester County: 2.5 %Worcester County2.5Plymouth County: 2.4 %Plymouth County2.4Franklin County: 2.2 %Franklin County2.2Berkshire County: 2.1 %Berkshire County2.1Hampshire County: 2 %Hampshire County2Norfolk County: 1.9 %Norfolk County1.9
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2022 (%)Change on 2021
1Dukes County6.5+0.3 pts
2Nantucket County4.7-1.4 pts
3Suffolk County3.5-0.1 pts
4Hampden County3.1+0.1 pts
5Barnstable County3-0.2 pts
6Essex County2.9-0.1 pts
7Bristol County2.9-0.2 pts
8Middlesex County2.5-0.1 pts
9Worcester County2.5+0.1 pts
10Plymouth County2.4-0.1 pts
11Franklin County2.2-0.1 pts
12Berkshire County2.1-0.2 pts
13Hampshire County2-0.4 pts
14Norfolk County1.9-0 pts

Other periods

About this ranking

People without health insurance coverage of any kind, as a percentage of the civilian noninstitutionalized population. 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 with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-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 with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs (Counties in Massachusetts by uninsured rate, all ages (US), 2022) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat

MLA 9

American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs, Counties in Massachusetts by uninsured rate, all ages (US), 2022. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat. Invokely, https://invokely.ai/rankings/uninsured-rate/massachusetts-counties?period=2022. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs. Counties in Massachusetts by uninsured rate, all ages (US), 2022. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate/massachusetts-counties?period=2022.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs, Counties in Massachusetts by uninsured rate, all ages (US), 2022 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat, via Invokely: https://invokely.ai/rankings/uninsured-rate/massachusetts-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_massachusetts_by_2022,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs: Counties in Massachusetts by uninsured rate, all ages (US), 2022}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate/massachusetts-counties?period=2022. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs: Counties in Massachusetts by uninsured rate, all ages (US), 2022
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat
L2  - https://invokely.ai/rankings/uninsured-rate/massachusetts-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate/massachusetts-counties?period=2022.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat. Retrieved 2026-10-12.
ER  -
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Rank Counties in Massachusetts by uninsured rate, all ages (US) using official data, and cite the source.
rank_places {"indicator":"uninsured_rate","level":"province","within":"Massachusetts","limit":10}
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Questions

Which county has the highest uninsured rate, all ages (US)?

Dukes County, with 6.5% in 2022, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, all ages (US)?

Norfolk County, with 1.9% 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 B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs. Retrieved 2026-10-12.

Uninsured rate, all ages (US): other rankings

Counties in Massachusetts: more rankings