Data / Rankings / Uninsured rate, ages 19 to 34 (US, ACS) / Counties in Maryland

Counties in Maryland by uninsured rate, ages 19 to 34 (US, ACS)

Prince George's County had the highest uninsured rate, ages 19 to 34 (US, ACS) of 24 counties in 2021, at 16.3%. Calvert County had the lowest, at 5.7%. The median was 8.8% and the figure for Maryland was 10.2%. Source: the U.S. Census Bureau.

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Highest16.3Prince George's County
Lowest5.7Calvert County
Median8.824 counties
Maryland10.2History

Map of counties, 2021

Allegany County: 7.6 %Anne Arundel County: 9 %Baltimore County: 8.9 %Calvert County: 5.7 %Caroline County: 13.1 %Carroll County: 5.8 %Cecil County: 6.8 %Charles County: 8.9 %Dorchester County: 9.2 %Frederick County: 7.3 %Garrett County: 10.2 %Harford County: 5.9 %Howard County: 6.7 %Kent County: 7.9 %Montgomery County: 12.2 %Prince George's County: 16.3 %Queen Anne's County: 9.5 %St. Mary's County: 7.7 %Somerset County: 9.3 %Talbot County: 8.7 %Washington County: 8 %Wicomico County: 12.2 %Worcester County: 13.7 %Baltimore city: 8.2 %
  • Under 7.1
  • 7.1 to 8
  • 8 to 9
  • 9 to 11
  • 11 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: 16.3 %Prince George's County16.3Worcester County: 13.7 %Worcester County13.7Caroline County: 13.1 %Caroline County13.1Wicomico County: 12.2 %Wicomico County12.2Montgomery County: 12.2 %Montgomery County12.2Garrett County: 10.2 %Garrett County10.2Queen Anne's County: 9.5 %Queen Anne's County9.5Somerset County: 9.3 %Somerset County9.3Dorchester County: 9.2 %Dorchester County9.2Anne Arundel County: 9 %Anne Arundel County9Baltimore County: 8.9 %Baltimore County8.9Charles County: 8.9 %Charles County8.9Talbot County: 8.7 %Talbot County8.7Baltimore city: 8.2 %Baltimore city8.2Washington County: 8 %Washington County8Kent County: 7.9 %Kent County7.9St. Mary's County: 7.7 %St. Mary's County7.7Allegany County: 7.6 %Allegany County7.6Frederick County: 7.3 %Frederick County7.3Cecil County: 6.8 %Cecil County6.8Howard County: 6.7 %Howard County6.7Harford County: 5.9 %Harford County5.9Carroll County: 5.8 %Carroll County5.8Calvert County: 5.7 %Calvert County5.7Prince George's County: 16.3 %Prince George's County16.3Worcester County: 13.7 %Worcester County13.7Caroline County: 13.1 %Caroline County13.1Wicomico County: 12.2 %Wicomico County12.2Montgomery County: 12.2 %Montgomery County12.2Garrett County: 10.2 %Garrett County10.2Queen Anne's County: 9.5 %Queen Anne's County9.5Somerset County: 9.3 %Somerset County9.3Dorchester County: 9.2 %Dorchester County9.2Anne Arundel County: 9 %Anne Arundel County9Baltimore County: 8.9 %Baltimore County8.9Charles County: 8.9 %Charles County8.9Talbot County: 8.7 %Talbot County8.7Baltimore city: 8.2 %Baltimore city8.2Washington County: 8 %Washington County8Kent County: 7.9 %Kent County7.9St. Mary's County: 7.7 %St. Mary's County7.7Allegany County: 7.6 %Allegany County7.6Frederick County: 7.3 %Frederick County7.3Cecil County: 6.8 %Cecil County6.8Howard County: 6.7 %Howard County6.7Harford County: 5.9 %Harford County5.9Carroll County: 5.8 %Carroll County5.8Calvert County: 5.7 %Calvert County5.7
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Prince George's County16.3
2Worcester County13.7
3Caroline County13.1
4Wicomico County12.2
5Montgomery County12.2
6Garrett County10.2
7Queen Anne's County9.5
8Somerset County9.3
9Dorchester County9.2
10Anne Arundel County9
11Baltimore County8.9
12Charles County8.9
13Talbot County8.7
14Baltimore city8.2
15Washington County8
16Kent County7.9
17St. Mary's County7.7
18Allegany County7.6
19Frederick County7.3
20Cecil County6.8
21Howard County6.7
22Harford County5.9
23Carroll County5.8
24Calvert County5.7

Other periods

About this ranking

People aged 19 to 34 without health insurance coverage of any kind, as a percentage of the civilian noninstitutionalized population aged 19 to 34. 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 aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, 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 aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs (Counties in Maryland by uninsured rate, ages 19 to 34 (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 aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs, Counties in Maryland by uninsured rate, ages 19 to 34 (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-ages-19-34/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 aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs. Counties in Maryland by uninsured rate, ages 19 to 34 (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-ages-19-34/maryland-counties?period=2021.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs, Counties in Maryland by uninsured rate, ages 19 to 34 (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-ages-19-34/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 aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs: Counties in Maryland by uninsured rate, ages 19 to 34 (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-ages-19-34/maryland-counties?period=2021. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, 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 aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs: Counties in Maryland by uninsured rate, ages 19 to 34 (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-ages-19-34/maryland-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-19-34/maryland-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, 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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Questions

Which county has the highest uninsured rate, ages 19 to 34 (US, ACS)?

Prince George's County, with 16.3% in 2021, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, ages 19 to 34 (US, ACS)?

Calvert County, with 5.7% 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 aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs. Retrieved 2026-10-12.

Uninsured rate, ages 19 to 34 (US, ACS): other rankings

Counties in Maryland: more rankings