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

Counties in Maine by uninsured rate, all ages (US), 2024

Piscataquis County had the highest uninsured rate, all ages (US) of 16 counties in 2024, at 10.1%. Cumberland County had the lowest, at 4.7%. The median was 7.1% and the figure for Maine was 6.2%. Source: the U.S. Census Bureau.

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Highest10.1Piscataquis County
Lowest4.7Cumberland County
Median7.116 counties
Maine6.2History

Map of counties, 2024

Androscoggin County: 5.9 %Aroostook County: 8 %Cumberland County: 4.7 %Franklin County: 7.9 %Hancock County: 9.6 %Kennebec County: 5.8 %Knox County: 5.5 %Lincoln County: 6.6 %Oxford County: 8.6 %Penobscot County: 6.3 %Piscataquis County: 10.1 %Sagadahoc County: 5.3 %Somerset County: 7.5 %Waldo County: 9.2 %Washington County: 9.1 %York County: 4.8 %
  • Under 5.5
  • 5.5 to 6.3
  • 6.3 to 7.9
  • 7.9 to 9.1
  • 9.1 and over
%, 2024. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2024

Piscataquis County: 10.1 %Piscataquis County10.1Hancock County: 9.6 %Hancock County9.6Waldo County: 9.2 %Waldo County9.2Washington County: 9.1 %Washington County9.1Oxford County: 8.6 %Oxford County8.6Aroostook County: 8 %Aroostook County8Franklin County: 7.9 %Franklin County7.9Somerset County: 7.5 %Somerset County7.5Lincoln County: 6.6 %Lincoln County6.6Penobscot County: 6.3 %Penobscot County6.3Androscoggin County: 5.9 %Androscoggin County5.9Kennebec County: 5.8 %Kennebec County5.8Knox County: 5.5 %Knox County5.5Sagadahoc County: 5.3 %Sagadahoc County5.3York County: 4.8 %York County4.8Cumberland County: 4.7 %Cumberland County4.7Piscataquis County: 10.1 %Piscataquis County10.1Hancock County: 9.6 %Hancock County9.6Waldo County: 9.2 %Waldo County9.2Washington County: 9.1 %Washington County9.1Oxford County: 8.6 %Oxford County8.6Aroostook County: 8 %Aroostook County8Franklin County: 7.9 %Franklin County7.9Somerset County: 7.5 %Somerset County7.5Lincoln County: 6.6 %Lincoln County6.6Penobscot County: 6.3 %Penobscot County6.3Androscoggin County: 5.9 %Androscoggin County5.9Kennebec County: 5.8 %Kennebec County5.8Knox County: 5.5 %Knox County5.5Sagadahoc County: 5.3 %Sagadahoc County5.3York County: 4.8 %York County4.8Cumberland County: 4.7 %Cumberland County4.7
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2024 (%)Change on 2023
1Piscataquis County10.1+0.1 pts
2Hancock County9.6-0.6 pts
3Waldo County9.2-0.3 pts
4Washington County9.1-0.7 pts
5Oxford County8.6+0.2 pts
6Aroostook County80 pts
7Franklin County7.9-1.6 pts
8Somerset County7.5-0.3 pts
9Lincoln County6.6-0.9 pts
10Penobscot County6.3-0.9 pts
11Androscoggin County5.9-0.9 pts
12Kennebec County5.8-0.9 pts
13Knox County5.5-0.8 pts
14Sagadahoc County5.3-0.1 pts
15York County4.8-0.5 pts
16Cumberland County4.7-0 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/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 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), 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 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), 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/maine-counties. 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), 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/maine-counties.

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), 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/maine-counties (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_maine_by_2024,
  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), 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/maine-counties. 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/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 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), 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/maine-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate/maine-counties.
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/2024/table-based-SF/data/5YRData/acsdt5y2024-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)?

Piscataquis County, with 10.1% in 2024, according to the U.S. Census Bureau.

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

Cumberland County, with 4.7% 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 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