Data / Rankings / Uninsured rate, 65 and over (US, ACS) / Counties in Maryland

Counties in Maryland by uninsured rate, 65 and over (US, ACS)

Prince George's County had the highest uninsured rate, 65 and over (US, ACS) of 24 counties in 2021, at 2%. Wicomico County had the lowest, at 0%. The median was 0.4% and the figure for Maryland was 0.9%. Source: the U.S. Census Bureau.

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Highest2Prince George's County
Lowest0Wicomico County
Median0.424 counties
Maryland0.9History

Map of counties, 2021

Allegany County: 0.1 %Anne Arundel County: 0.7 %Baltimore County: 0.8 %Calvert County: 0 %Caroline County: 0.4 %Carroll County: 0.2 %Cecil County: 0.4 %Charles County: 0.3 %Dorchester County: 1.3 %Frederick County: 0.5 %Garrett County: 0.1 %Harford County: 0.4 %Howard County: 0.8 %Kent County: 0.1 %Montgomery County: 1.6 %Prince George's County: 2 %Queen Anne's County: 0.4 %St. Mary's County: 0.8 %Somerset County: 0.5 %Talbot County: 0.3 %Washington County: 0.7 %Wicomico County: 0 %Worcester County: 0.1 %Baltimore city: 0.7 %
  • Under 0.1
  • 0.1 to 0.4
  • 0.4 to 0.5
  • 0.5 to 0.8
  • 0.8 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: 2 %Prince George's County2Montgomery County: 1.6 %Montgomery County1.6Dorchester County: 1.3 %Dorchester County1.3St. Mary's County: 0.8 %St. Mary's County0.8Baltimore County: 0.8 %Baltimore County0.8Howard County: 0.8 %Howard County0.8Baltimore city: 0.7 %Baltimore city0.7Washington County: 0.7 %Washington County0.7Anne Arundel County: 0.7 %Anne Arundel County0.7Frederick County: 0.5 %Frederick County0.5Somerset County: 0.5 %Somerset County0.5Caroline County: 0.4 %Caroline County0.4Cecil County: 0.4 %Cecil County0.4Harford County: 0.4 %Harford County0.4Queen Anne's County: 0.4 %Queen Anne's County0.4Charles County: 0.3 %Charles County0.3Talbot County: 0.3 %Talbot County0.3Carroll County: 0.2 %Carroll County0.2Kent County: 0.1 %Kent County0.1Garrett County: 0.1 %Garrett County0.1Allegany County: 0.1 %Allegany County0.1Worcester County: 0.1 %Worcester County0.1Calvert County: 0 %Calvert County0Wicomico County: 0 %Wicomico County0Prince George's County: 2 %Prince George's County2Montgomery County: 1.6 %Montgomery County1.6Dorchester County: 1.3 %Dorchester County1.3St. Mary's County: 0.8 %St. Mary's County0.8Baltimore County: 0.8 %Baltimore County0.8Howard County: 0.8 %Howard County0.8Baltimore city: 0.7 %Baltimore city0.7Washington County: 0.7 %Washington County0.7Anne Arundel County: 0.7 %Anne Arundel County0.7Frederick County: 0.5 %Frederick County0.5Somerset County: 0.5 %Somerset County0.5Caroline County: 0.4 %Caroline County0.4Cecil County: 0.4 %Cecil County0.4Harford County: 0.4 %Harford County0.4Queen Anne's County: 0.4 %Queen Anne's County0.4Charles County: 0.3 %Charles County0.3Talbot County: 0.3 %Talbot County0.3Carroll County: 0.2 %Carroll County0.2Kent County: 0.1 %Kent County0.1Garrett County: 0.1 %Garrett County0.1Allegany County: 0.1 %Allegany County0.1Worcester County: 0.1 %Worcester County0.1Calvert County: 0 %Calvert County0Wicomico County: 0 %Wicomico County0
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Prince George's County2
2Montgomery County1.6
3Dorchester County1.3
4St. Mary's County0.8
5Baltimore County0.8
6Howard County0.8
7Baltimore city0.7
8Washington County0.7
9Anne Arundel County0.7
10Frederick County0.5
11Somerset County0.5
12Caroline County0.4
13Cecil County0.4
14Harford County0.4
15Queen Anne's County0.4
16Charles County0.3
17Talbot County0.3
18Carroll County0.2
19Kent County0.1
20Garrett County0.1
21Allegany County0.1
22Worcester County0.1
23Calvert County0
23Wicomico County0

Other periods

About this ranking

People aged 65 and over without health insurance coverage of any kind, as a percentage of the civilian noninstitutionalized population aged 65 and over. 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 65 and over with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 65 and over, 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 65 and over with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 65 and over, calculated with stored inputs (Counties in Maryland by uninsured rate, 65 and over (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 65 and over with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 65 and over, calculated with stored inputs, Counties in Maryland by uninsured rate, 65 and over (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-65-and-over/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 65 and over with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 65 and over, calculated with stored inputs. Counties in Maryland by uninsured rate, 65 and over (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-65-and-over/maryland-counties?period=2021.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B27010: people aged 65 and over with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 65 and over, calculated with stored inputs, Counties in Maryland by uninsured rate, 65 and over (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-65-and-over/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 65 and over with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 65 and over, calculated with stored inputs: Counties in Maryland by uninsured rate, 65 and over (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-65-and-over/maryland-counties?period=2021. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 65 and over with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 65 and over, 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 65 and over with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 65 and over, calculated with stored inputs: Counties in Maryland by uninsured rate, 65 and over (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-65-and-over/maryland-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-65-and-over/maryland-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 65 and over with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 65 and over, 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, 65 and over (US, ACS)?

Prince George's County, with 2% in 2021, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, 65 and over (US, ACS)?

Wicomico County, with 0% 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 65 and over with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 65 and over, calculated with stored inputs. Retrieved 2026-10-12.

Uninsured rate, 65 and over (US, ACS): other rankings

Counties in Maryland: more rankings