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

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

Washington County had the highest uninsured rate, all ages (US) of 16 counties in 2022, at 10.5%. Cumberland County had the lowest, at 5%. The median was 8.4% and the figure for Maine was 7.1%. Source: the U.S. Census Bureau.

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Highest10.5Washington County
Lowest5Cumberland County
Median8.416 counties
Maine7.1History

Map of counties, 2022

Androscoggin County: 7.4 %Aroostook County: 8.8 %Cumberland County: 5 %Franklin County: 9.2 %Hancock County: 10.2 %Kennebec County: 7.1 %Knox County: 7.4 %Lincoln County: 8.9 %Oxford County: 9 %Penobscot County: 8 %Piscataquis County: 10.5 %Sagadahoc County: 6.7 %Somerset County: 8 %Waldo County: 10.5 %Washington County: 10.5 %York County: 5.4 %
  • Under 7.1
  • 7.1 to 8
  • 8 to 8.9
  • 8.9 to 10
  • 10 and over
%, 2022. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2022

Washington County: 10.5 %Washington County10.5Waldo County: 10.5 %Waldo County10.5Piscataquis County: 10.5 %Piscataquis County10.5Hancock County: 10.2 %Hancock County10.2Franklin County: 9.2 %Franklin County9.2Oxford County: 9 %Oxford County9Lincoln County: 8.9 %Lincoln County8.9Aroostook County: 8.8 %Aroostook County8.8Penobscot County: 8 %Penobscot County8Somerset County: 8 %Somerset County8Knox County: 7.4 %Knox County7.4Androscoggin County: 7.4 %Androscoggin County7.4Kennebec County: 7.1 %Kennebec County7.1Sagadahoc County: 6.7 %Sagadahoc County6.7York County: 5.4 %York County5.4Cumberland County: 5 %Cumberland County5Washington County: 10.5 %Washington County10.5Waldo County: 10.5 %Waldo County10.5Piscataquis County: 10.5 %Piscataquis County10.5Hancock County: 10.2 %Hancock County10.2Franklin County: 9.2 %Franklin County9.2Oxford County: 9 %Oxford County9Lincoln County: 8.9 %Lincoln County8.9Aroostook County: 8.8 %Aroostook County8.8Penobscot County: 8 %Penobscot County8Somerset County: 8 %Somerset County8Knox County: 7.4 %Knox County7.4Androscoggin County: 7.4 %Androscoggin County7.4Kennebec County: 7.1 %Kennebec County7.1Sagadahoc County: 6.7 %Sagadahoc County6.7York County: 5.4 %York County5.4Cumberland County: 5 %Cumberland County5
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2022 (%)Change on 2021
1Washington County10.5-0.5 pts
2Waldo County10.5-0.8 pts
3Piscataquis County10.5-1.5 pts
4Hancock County10.2+0.3 pts
5Franklin County9.2-1 pts
6Oxford County9+0.6 pts
7Lincoln County8.9-0.7 pts
8Aroostook County8.8+0.2 pts
9Penobscot County8-0.1 pts
9Somerset County8-0.6 pts
11Knox County7.4-0.2 pts
12Androscoggin County7.4-0.3 pts
13Kennebec County7.1-0.5 pts
14Sagadahoc County6.7-0.2 pts
15York County5.4+0.1 pts
16Cumberland County5-0.4 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 Maine 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 Maine 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/maine-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 Maine 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/maine-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 Maine 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/maine-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_maine_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 Maine 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/maine-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 Maine 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/maine-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate/maine-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 Maine by uninsured rate, all ages (US) using official data, and cite the source.
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Questions

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

Washington County, with 10.5% in 2022, according to the U.S. Census Bureau.

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

Cumberland County, with 5% 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 Maine: more rankings