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

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

Hancock County had the highest uninsured rate, all ages (US) of 16 counties in 2023, at 10.2%. Cumberland County had the lowest, at 4.7%. The median was 7.7% and the figure for Maine was 6.7%. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest10.2Hancock County
Lowest4.7Cumberland County
Median7.716 counties
Maine6.7History

Map of counties, 2023

Androscoggin County: 6.8 %Aroostook County: 8 %Cumberland County: 4.7 %Franklin County: 9.5 %Hancock County: 10.2 %Kennebec County: 6.7 %Knox County: 6.3 %Lincoln County: 7.5 %Oxford County: 8.5 %Penobscot County: 7.2 %Piscataquis County: 10 %Sagadahoc County: 5.4 %Somerset County: 7.8 %Waldo County: 9.4 %Washington County: 9.8 %York County: 5.3 %
  • Under 6.3
  • 6.3 to 7.2
  • 7.2 to 8
  • 8 to 9.5
  • 9.5 and over
%, 2023. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2023

Hancock County: 10.2 %Hancock County10.2Piscataquis County: 10 %Piscataquis County10Washington County: 9.8 %Washington County9.8Franklin County: 9.5 %Franklin County9.5Waldo County: 9.4 %Waldo County9.4Oxford County: 8.5 %Oxford County8.5Aroostook County: 8 %Aroostook County8Somerset County: 7.8 %Somerset County7.8Lincoln County: 7.5 %Lincoln County7.5Penobscot County: 7.2 %Penobscot County7.2Androscoggin County: 6.8 %Androscoggin County6.8Kennebec County: 6.7 %Kennebec County6.7Knox County: 6.3 %Knox County6.3Sagadahoc County: 5.4 %Sagadahoc County5.4York County: 5.3 %York County5.3Cumberland County: 4.7 %Cumberland County4.7Hancock County: 10.2 %Hancock County10.2Piscataquis County: 10 %Piscataquis County10Washington County: 9.8 %Washington County9.8Franklin County: 9.5 %Franklin County9.5Waldo County: 9.4 %Waldo County9.4Oxford County: 8.5 %Oxford County8.5Aroostook County: 8 %Aroostook County8Somerset County: 7.8 %Somerset County7.8Lincoln County: 7.5 %Lincoln County7.5Penobscot County: 7.2 %Penobscot County7.2Androscoggin County: 6.8 %Androscoggin County6.8Kennebec County: 6.7 %Kennebec County6.7Knox County: 6.3 %Knox County6.3Sagadahoc County: 5.4 %Sagadahoc County5.4York County: 5.3 %York County5.3Cumberland County: 4.7 %Cumberland County4.7
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2023 (%)Change on 2022
1Hancock County10.20 pts
2Piscataquis County10-0.5 pts
3Washington County9.8-0.8 pts
4Franklin County9.5+0.3 pts
5Waldo County9.4-1.1 pts
6Oxford County8.5-0.6 pts
7Aroostook County8-0.8 pts
8Somerset County7.8-0.2 pts
9Lincoln County7.5-1.4 pts
10Penobscot County7.2-0.8 pts
11Androscoggin County6.8-0.6 pts
12Kennebec County6.7-0.4 pts
13Knox County6.3-1.1 pts
14Sagadahoc County5.4-1.3 pts
15York County5.3-0 pts
16Cumberland County4.7-0.3 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/2023/table-based-SF/data/5YRData/acsdt5y2023-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), 2023) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-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), 2023. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat. Invokely, https://invokely.ai/rankings/uninsured-rate/maine-counties?period=2023. 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), 2023. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate/maine-counties?period=2023.

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), 2023 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat, via Invokely: https://invokely.ai/rankings/uninsured-rate/maine-counties?period=2023 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_maine_by_2023,
  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), 2023}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate/maine-counties?period=2023. 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/2023/table-based-SF/data/5YRData/acsdt5y2023-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), 2023
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat
L2  - https://invokely.ai/rankings/uninsured-rate/maine-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate/maine-counties?period=2023.
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/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat. Retrieved 2026-10-12.
ER  -
Embed this chart

Paste this code into a web page or a blog post. The chart shows the latest figures as they are published, with the source and a link back to this page.

Sites that read oEmbed links, such as WordPress, can show the chart when you paste the link to this page.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in Maine by uninsured rate, all ages (US) using official data, and cite the source.
rank_places {"indicator":"uninsured_rate","level":"province","within":"Maine","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=uninsured_rate&level=province&within=Maine&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

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

Hancock County, with 10.2% in 2023, according to the U.S. Census Bureau.

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

Cumberland County, with 4.7% in 2023.

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