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

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

Prince George's County had the highest uninsured rate, under 19 (US, ACS) of 24 counties in 2021, at 6.4%. Carroll County had the lowest, at 1.6%. The median was 3.4% and the figure for Maryland was 3.7%. Source: the U.S. Census Bureau.

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Highest6.4Prince George's County
Lowest1.6Carroll County
Median3.424 counties
Maryland3.7History

Map of counties, 2021

Allegany County: 3.2 %Anne Arundel County: 2.5 %Baltimore County: 3.8 %Calvert County: 2 %Caroline County: 4.9 %Carroll County: 1.6 %Cecil County: 3.3 %Charles County: 4.2 %Dorchester County: 4.7 %Frederick County: 2.6 %Garrett County: 3.4 %Harford County: 3.3 %Howard County: 3 %Kent County: 4.3 %Montgomery County: 2.9 %Prince George's County: 6.4 %Queen Anne's County: 2.1 %St. Mary's County: 2.9 %Somerset County: 3.3 %Talbot County: 3.8 %Washington County: 3.7 %Wicomico County: 4.2 %Worcester County: 5.4 %Baltimore city: 3.4 %
  • Under 2.8
  • 2.8 to 3.3
  • 3.3 to 3.6
  • 3.6 to 4.2
  • 4.2 and over
%, 2021. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2021

Prince George's County: 6.4 %Prince George's County6.4Worcester County: 5.4 %Worcester County5.4Caroline County: 4.9 %Caroline County4.9Dorchester County: 4.7 %Dorchester County4.7Kent County: 4.3 %Kent County4.3Wicomico County: 4.2 %Wicomico County4.2Charles County: 4.2 %Charles County4.2Baltimore County: 3.8 %Baltimore County3.8Talbot County: 3.8 %Talbot County3.8Washington County: 3.7 %Washington County3.7Baltimore city: 3.4 %Baltimore city3.4Garrett County: 3.4 %Garrett County3.4Cecil County: 3.3 %Cecil County3.3Harford County: 3.3 %Harford County3.3Somerset County: 3.3 %Somerset County3.3Allegany County: 3.2 %Allegany County3.2Howard County: 3 %Howard County3Montgomery County: 2.9 %Montgomery County2.9St. Mary's County: 2.9 %St. Mary's County2.9Frederick County: 2.6 %Frederick County2.6Anne Arundel County: 2.5 %Anne Arundel County2.5Queen Anne's County: 2.1 %Queen Anne's County2.1Calvert County: 2 %Calvert County2Carroll County: 1.6 %Carroll County1.6Prince George's County: 6.4 %Prince George's County6.4Worcester County: 5.4 %Worcester County5.4Caroline County: 4.9 %Caroline County4.9Dorchester County: 4.7 %Dorchester County4.7Kent County: 4.3 %Kent County4.3Wicomico County: 4.2 %Wicomico County4.2Charles County: 4.2 %Charles County4.2Baltimore County: 3.8 %Baltimore County3.8Talbot County: 3.8 %Talbot County3.8Washington County: 3.7 %Washington County3.7Baltimore city: 3.4 %Baltimore city3.4Garrett County: 3.4 %Garrett County3.4Cecil County: 3.3 %Cecil County3.3Harford County: 3.3 %Harford County3.3Somerset County: 3.3 %Somerset County3.3Allegany County: 3.2 %Allegany County3.2Howard County: 3 %Howard County3Montgomery County: 2.9 %Montgomery County2.9St. Mary's County: 2.9 %St. Mary's County2.9Frederick County: 2.6 %Frederick County2.6Anne Arundel County: 2.5 %Anne Arundel County2.5Queen Anne's County: 2.1 %Queen Anne's County2.1Calvert County: 2 %Calvert County2Carroll County: 1.6 %Carroll County1.6
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Prince George's County6.4
2Worcester County5.4
3Caroline County4.9
4Dorchester County4.7
5Kent County4.3
6Wicomico County4.2
7Charles County4.2
8Baltimore County3.8
8Talbot County3.8
10Washington County3.7
11Baltimore city3.4
11Garrett County3.4
13Cecil County3.3
14Harford County3.3
15Somerset County3.3
16Allegany County3.2
17Howard County3
18Montgomery County2.9
18St. Mary's County2.9
20Frederick County2.6
21Anne Arundel County2.5
22Queen Anne's County2.1
23Calvert County2
24Carroll County1.6

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 Maryland 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 Maryland 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/maryland-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 Maryland 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/maryland-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 Maryland 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/maryland-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_maryland_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 Maryland 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/maryland-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 Maryland 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/maryland-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-19-acs/maryland-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 Maryland by uninsured rate, under 19 (US, ACS) using official data, and cite the source.
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Questions

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

Prince George's County, with 6.4% in 2021, according to the U.S. Census Bureau.

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

Carroll County, with 1.6% 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 Maryland: more rankings