Data / Rankings / Uninsured rate, ages 35 to 64 (US, ACS) / Counties in Maryland

Counties in Maryland by uninsured rate, ages 35 to 64 (US, ACS)

Prince George's County had the highest uninsured rate, ages 35 to 64 (US, ACS) of 24 counties in 2022, at 12.6%. Charles County had the lowest, at 3.5%. The median was 5.8% and the figure for Maryland was 7.1%. Source: the U.S. Census Bureau.

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Highest12.6Prince George's County
Lowest3.5Charles County
Median5.824 counties
Maryland7.1History

Map of counties, 2022

Allegany County: 4.3 %Anne Arundel County: 4.9 %Baltimore County: 5.9 %Calvert County: 3.8 %Caroline County: 8.3 %Carroll County: 3.7 %Cecil County: 4.5 %Charles County: 3.5 %Dorchester County: 5.8 %Frederick County: 6.2 %Garrett County: 7.2 %Harford County: 3.8 %Howard County: 4.2 %Kent County: 4.6 %Montgomery County: 8.4 %Prince George's County: 12.6 %Queen Anne's County: 5.8 %St. Mary's County: 4.5 %Somerset County: 4.2 %Talbot County: 6.2 %Washington County: 6.6 %Wicomico County: 7.2 %Worcester County: 7.6 %Baltimore city: 7.2 %
  • Under 4.2
  • 4.2 to 4.6
  • 4.6 to 6.1
  • 6.1 to 7.2
  • 7.2 and over
%, 2022. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2022

Prince George's County: 12.6 %Prince George's County12.6Montgomery County: 8.4 %Montgomery County8.4Caroline County: 8.3 %Caroline County8.3Worcester County: 7.6 %Worcester County7.6Wicomico County: 7.2 %Wicomico County7.2Baltimore city: 7.2 %Baltimore city7.2Garrett County: 7.2 %Garrett County7.2Washington County: 6.6 %Washington County6.6Frederick County: 6.2 %Frederick County6.2Talbot County: 6.2 %Talbot County6.2Baltimore County: 5.9 %Baltimore County5.9Dorchester County: 5.8 %Dorchester County5.8Queen Anne's County: 5.8 %Queen Anne's County5.8Anne Arundel County: 4.9 %Anne Arundel County4.9Kent County: 4.6 %Kent County4.6St. Mary's County: 4.5 %St. Mary's County4.5Cecil County: 4.5 %Cecil County4.5Allegany County: 4.3 %Allegany County4.3Howard County: 4.2 %Howard County4.2Somerset County: 4.2 %Somerset County4.2Calvert County: 3.8 %Calvert County3.8Harford County: 3.8 %Harford County3.8Carroll County: 3.7 %Carroll County3.7Charles County: 3.5 %Charles County3.5Prince George's County: 12.6 %Prince George's County12.6Montgomery County: 8.4 %Montgomery County8.4Caroline County: 8.3 %Caroline County8.3Worcester County: 7.6 %Worcester County7.6Wicomico County: 7.2 %Wicomico County7.2Baltimore city: 7.2 %Baltimore city7.2Garrett County: 7.2 %Garrett County7.2Washington County: 6.6 %Washington County6.6Frederick County: 6.2 %Frederick County6.2Talbot County: 6.2 %Talbot County6.2Baltimore County: 5.9 %Baltimore County5.9Dorchester County: 5.8 %Dorchester County5.8Queen Anne's County: 5.8 %Queen Anne's County5.8Anne Arundel County: 4.9 %Anne Arundel County4.9Kent County: 4.6 %Kent County4.6St. Mary's County: 4.5 %St. Mary's County4.5Cecil County: 4.5 %Cecil County4.5Allegany County: 4.3 %Allegany County4.3Howard County: 4.2 %Howard County4.2Somerset County: 4.2 %Somerset County4.2Calvert County: 3.8 %Calvert County3.8Harford County: 3.8 %Harford County3.8Carroll County: 3.7 %Carroll County3.7Charles County: 3.5 %Charles County3.5
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2022 (%)Change on 2021
1Prince George's County12.6+0.4 pts
2Montgomery County8.4+0.1 pts
3Caroline County8.3+1.1 pts
4Worcester County7.6-0.6 pts
5Wicomico County7.2-0.3 pts
6Baltimore city7.2-0.5 pts
7Garrett County7.2-0.2 pts
8Washington County6.6+0.5 pts
9Frederick County6.2+0.3 pts
10Talbot County6.2+0.2 pts
11Baltimore County5.9-0.1 pts
12Dorchester County5.8-0.4 pts
13Queen Anne's County5.80 pts
14Anne Arundel County4.9-0 pts
15Kent County4.6+0.2 pts
16St. Mary's County4.5+0.1 pts
17Cecil County4.5-0.2 pts
18Allegany County4.3-0.7 pts
19Howard County4.20 pts
20Somerset County4.2-1.3 pts
21Calvert County3.8+0.5 pts
22Harford County3.8+0.1 pts
23Carroll County3.7-0.3 pts
24Charles County3.5-0.4 pts

Other periods

About this ranking

People aged 35 to 64 without health insurance coverage of any kind, as a percentage of the civilian noninstitutionalized population aged 35 to 64. 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 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-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 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs (Counties in Maryland by uninsured rate, ages 35 to 64 (US, ACS), 2022) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat

MLA 9

American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs, Counties in Maryland by uninsured rate, ages 35 to 64 (US, ACS), 2022. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-35-64/maryland-counties?period=2022. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. Counties in Maryland by uninsured rate, ages 35 to 64 (US, ACS), 2022. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-35-64/maryland-counties?period=2022.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs, Counties in Maryland by uninsured rate, ages 35 to 64 (US, ACS), 2022 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-35-64/maryland-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_maryland_by_2022,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs: Counties in Maryland by uninsured rate, ages 35 to 64 (US, ACS), 2022}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-35-64/maryland-counties?period=2022. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2022/table-based-SF/data/5YRData/acsdt5y2022-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 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs: Counties in Maryland by uninsured rate, ages 35 to 64 (US, ACS), 2022
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat
L2  - https://invokely.ai/rankings/uninsured-rate-ages-35-64/maryland-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-35-64/maryland-counties?period=2022.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest uninsured rate, ages 35 to 64 (US, ACS)?

Prince George's County, with 12.6% in 2022, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, ages 35 to 64 (US, ACS)?

Charles County, with 3.5% in 2022.

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 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. Retrieved 2026-10-12.

Uninsured rate, ages 35 to 64 (US, ACS): other rankings

Counties in Maryland: more rankings