Data / Rankings / Uninsured rate, under 65 (US model-based estimate) / Counties in Maryland

Counties in Maryland by uninsured rate, under 65 (US model-based estimate)

Prince George's County had the highest uninsured rate, under 65 (US model-based estimate) of 24 counties in 2022, at 10.9%. Howard County had the lowest, at 4.3%. The median was 6.1% and the figure for Maryland was 6.8%. Source: the U.S. Census Bureau.

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Highest10.9Prince George's County
Lowest4.3Howard County
Median6.124 counties
Maryland6.8History

Map of counties, 2022

Allegany County: 6.1 %Anne Arundel County: 5.2 %Baltimore County: 6 %Calvert County: 4.4 %Caroline County: 8.7 %Carroll County: 4.3 %Cecil County: 5.4 %Charles County: 4.9 %Dorchester County: 7 %Frederick County: 5.2 %Garrett County: 8.4 %Harford County: 4.6 %Howard County: 4.3 %Kent County: 7.1 %Montgomery County: 7.7 %Prince George's County: 10.9 %Queen Anne's County: 6 %St. Mary's County: 5.3 %Somerset County: 6.1 %Talbot County: 7.5 %Washington County: 7.6 %Wicomico County: 8 %Worcester County: 7.1 %Baltimore city: 6.6 %
  • Under 5.1
  • 5.1 to 6
  • 6 to 6.9
  • 6.9 to 7.6
  • 7.6 and over
%, 2022. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2022

Prince George's County: 10.9 %Prince George's County10.9Caroline County: 8.7 %Caroline County8.7Garrett County: 8.4 %Garrett County8.4Wicomico County: 8 %Wicomico County8Montgomery County: 7.7 %Montgomery County7.7Washington County: 7.6 %Washington County7.6Talbot County: 7.5 %Talbot County7.5Kent County: 7.1 %Kent County7.1Worcester County: 7.1 %Worcester County7.1Dorchester County: 7 %Dorchester County7Baltimore city: 6.6 %Baltimore city6.6Allegany County: 6.1 %Allegany County6.1Somerset County: 6.1 %Somerset County6.1Baltimore County: 6 %Baltimore County6Queen Anne's County: 6 %Queen Anne's County6Cecil County: 5.4 %Cecil County5.4St. Mary's County: 5.3 %St. Mary's County5.3Anne Arundel County: 5.2 %Anne Arundel County5.2Frederick County: 5.2 %Frederick County5.2Charles County: 4.9 %Charles County4.9Harford County: 4.6 %Harford County4.6Calvert County: 4.4 %Calvert County4.4Carroll County: 4.3 %Carroll County4.3Howard County: 4.3 %Howard County4.3Prince George's County: 10.9 %Prince George's County10.9Caroline County: 8.7 %Caroline County8.7Garrett County: 8.4 %Garrett County8.4Wicomico County: 8 %Wicomico County8Montgomery County: 7.7 %Montgomery County7.7Washington County: 7.6 %Washington County7.6Talbot County: 7.5 %Talbot County7.5Kent County: 7.1 %Kent County7.1Worcester County: 7.1 %Worcester County7.1Dorchester County: 7 %Dorchester County7Baltimore city: 6.6 %Baltimore city6.6Allegany County: 6.1 %Allegany County6.1Somerset County: 6.1 %Somerset County6.1Baltimore County: 6 %Baltimore County6Queen Anne's County: 6 %Queen Anne's County6Cecil County: 5.4 %Cecil County5.4St. Mary's County: 5.3 %St. Mary's County5.3Anne Arundel County: 5.2 %Anne Arundel County5.2Frederick County: 5.2 %Frederick County5.2Charles County: 4.9 %Charles County4.9Harford County: 4.6 %Harford County4.6Calvert County: 4.4 %Calvert County4.4Carroll County: 4.3 %Carroll County4.3Howard County: 4.3 %Howard County4.3
%. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Full ranking

RankCounties2022 (%)Change on 2021
1Prince George's County10.9+0.1 pts
2Caroline County8.7-0.4 pts
3Garrett County8.4+1 pts
4Wicomico County8-0.7 pts
5Montgomery County7.7+0.4 pts
6Washington County7.6+0.8 pts
7Talbot County7.5-0.1 pts
8Kent County7.1-1.4 pts
8Worcester County7.1-0.5 pts
10Dorchester County7-1.6 pts
11Baltimore city6.6-0.3 pts
12Allegany County6.1-0.2 pts
12Somerset County6.1-0.6 pts
14Baltimore County6-0.4 pts
14Queen Anne's County6-0.1 pts
16Cecil County5.4-1.1 pts
17St. Mary's County5.3-0.5 pts
18Anne Arundel County5.2-0.3 pts
18Frederick County5.2-0.9 pts
20Charles County4.9-0.3 pts
21Harford County4.6-0.5 pts
22Calvert County4.40 pts
23Carroll County4.3-0.4 pts
23Howard County4.3-0.2 pts

Other periods

About this ranking

People under 65 without health insurance coverage of any kind, as a percentage of all people under 65. United States: Census Bureau Small Area Health Insurance Estimates (SAHIE) for states and counties, all races, both sexes and all income levels.

A model-based single-year estimate that combines the American Community Survey with administrative records and population estimates, so every county gets a figure. Covers states and counties only, because the SAHIE dataset files have no national row. The Census Bureau advises comparing years from 2008 on only; 2013 is the updated release. People 65 and over are left out because nearly all of them have Medicare.

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. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2022-csv.zip. 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). Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties (Counties in Maryland by uninsured rate, under 65 (US model-based estimate), 2022) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2022-csv.zip

MLA 9

Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties, Counties in Maryland by uninsured rate, under 65 (US model-based estimate), 2022. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2022-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/maryland-counties?period=2022. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. Counties in Maryland by uninsured rate, under 65 (US model-based estimate), 2022. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2022-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/maryland-counties?period=2022.

Harvard

U.S. Census Bureau (2026) Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties, Counties in Maryland by uninsured rate, under 65 (US model-based estimate), 2022 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2022-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-under-65/maryland-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_maryland_by_2022,
  author = {{U.S. Census Bureau}},
  title = {{Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties: Counties in Maryland by uninsured rate, under 65 (US model-based estimate), 2022}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2022-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/maryland-counties?period=2022. Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2022-csv.zip. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties: Counties in Maryland by uninsured rate, under 65 (US model-based estimate), 2022
PY  - 2026
DA  - 2026/08/06
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2022-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-under-65/maryland-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/maryland-counties?period=2022.
N1  - Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2022-csv.zip. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest uninsured rate, under 65 (US model-based estimate)?

Prince George's County, with 10.9% in 2022, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, under 65 (US model-based estimate)?

Howard County, with 4.3% 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, Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Uninsured rate, under 65 (US model-based estimate): other rankings

Counties in Maryland: more rankings