Data / Rankings / Uninsured rate, under 19 (US, ACS) / Counties in Maine

Counties in Maine by uninsured rate, under 19 (US, ACS)

Waldo County had the highest uninsured rate, under 19 (US, ACS) of 16 counties in 2021, at 15.9%. Cumberland County had the lowest, at 2.8%. The median was 5.3% and the figure for Maine was 4.9%. Source: the U.S. Census Bureau.

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Highest15.9Waldo County
Lowest2.8Cumberland County
Median5.316 counties
Maine4.9History

Map of counties, 2021

Androscoggin County: 3.9 %Aroostook County: 6.6 %Cumberland County: 2.8 %Franklin County: 4.8 %Hancock County: 10.6 %Kennebec County: 5.2 %Knox County: 5.4 %Lincoln County: 8.5 %Oxford County: 3.7 %Penobscot County: 4.5 %Piscataquis County: 6.9 %Sagadahoc County: 5.7 %Somerset County: 4.6 %Waldo County: 15.9 %Washington County: 8.8 %York County: 3.3 %
  • Under 3.9
  • 3.9 to 4.8
  • 4.8 to 5.7
  • 5.7 to 8.5
  • 8.5 and over
%, 2021. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2021

Waldo County: 15.9 %Waldo County15.9Hancock County: 10.6 %Hancock County10.6Washington County: 8.8 %Washington County8.8Lincoln County: 8.5 %Lincoln County8.5Piscataquis County: 6.9 %Piscataquis County6.9Aroostook County: 6.6 %Aroostook County6.6Sagadahoc County: 5.7 %Sagadahoc County5.7Knox County: 5.4 %Knox County5.4Kennebec County: 5.2 %Kennebec County5.2Franklin County: 4.8 %Franklin County4.8Somerset County: 4.6 %Somerset County4.6Penobscot County: 4.5 %Penobscot County4.5Androscoggin County: 3.9 %Androscoggin County3.9Oxford County: 3.7 %Oxford County3.7York County: 3.3 %York County3.3Cumberland County: 2.8 %Cumberland County2.8Waldo County: 15.9 %Waldo County15.9Hancock County: 10.6 %Hancock County10.6Washington County: 8.8 %Washington County8.8Lincoln County: 8.5 %Lincoln County8.5Piscataquis County: 6.9 %Piscataquis County6.9Aroostook County: 6.6 %Aroostook County6.6Sagadahoc County: 5.7 %Sagadahoc County5.7Knox County: 5.4 %Knox County5.4Kennebec County: 5.2 %Kennebec County5.2Franklin County: 4.8 %Franklin County4.8Somerset County: 4.6 %Somerset County4.6Penobscot County: 4.5 %Penobscot County4.5Androscoggin County: 3.9 %Androscoggin County3.9Oxford County: 3.7 %Oxford County3.7York County: 3.3 %York County3.3Cumberland County: 2.8 %Cumberland County2.8
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Waldo County15.9
2Hancock County10.6
3Washington County8.8
4Lincoln County8.5
5Piscataquis County6.9
6Aroostook County6.6
7Sagadahoc County5.7
8Knox County5.4
9Kennebec County5.2
10Franklin County4.8
11Somerset County4.6
12Penobscot County4.5
13Androscoggin County3.9
14Oxford County3.7
15York County3.3
16Cumberland County2.8

Other periods

About this ranking

People under 19 without health insurance coverage of any kind, as a percentage of the civilian noninstitutionalized population under 19. 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 under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-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 under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs (Counties in Maine by uninsured rate, under 19 (US, ACS), 2021) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat

MLA 9

American Community Survey 5-year estimates, table B27010: people under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs, Counties in Maine by uninsured rate, under 19 (US, ACS), 2021. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Invokely, https://invokely.ai/rankings/uninsured-rate-under-19-acs/maine-counties?period=2021. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B27010: people under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs. Counties in Maine by uninsured rate, under 19 (US, ACS), 2021. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-under-19-acs/maine-counties?period=2021.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B27010: people under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs, Counties in Maine by uninsured rate, under 19 (US, ACS), 2021 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat, via Invokely: https://invokely.ai/rankings/uninsured-rate-under-19-acs/maine-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_maine_by_2021,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B27010: people under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs: Counties in Maine by uninsured rate, under 19 (US, ACS), 2021}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-19-acs/maine-counties?period=2021. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B27010: people under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs: Counties in Maine by uninsured rate, under 19 (US, ACS), 2021
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat
L2  - https://invokely.ai/rankings/uninsured-rate-under-19-acs/maine-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-19-acs/maine-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Retrieved 2026-10-12.
ER  -
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Rank Counties in Maine by uninsured rate, under 19 (US, ACS) using official data, and cite the source.
rank_places {"indicator":"uninsured_rate_under_19_acs","level":"province","within":"Maine","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=uninsured_rate_under_19_acs&level=province&within=Maine&limit=10

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Questions

Which county has the highest uninsured rate, under 19 (US, ACS)?

Waldo County, with 15.9% in 2021, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, under 19 (US, ACS)?

Cumberland County, with 2.8% in 2021.

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 under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs. Retrieved 2026-10-12.

Uninsured rate, under 19 (US, ACS): other rankings

Counties in Maine: more rankings