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), 2024

Prince George's County had the highest uninsured rate, under 65 (US model-based estimate) of 24 counties in 2024, at 11.2%. Calvert County had the lowest, at 4.1%. The median was 6.9% and the figure for Maryland was 7.2%. Source: the U.S. Census Bureau.

Highest11.2Prince George's County
Lowest4.1Calvert County
Median6.924 counties
Maryland7.2History

All counties, 2024

Prince George's County: 11.2 %Prince George's County11.2Caroline County: 9.2 %Caroline County9.2Dorchester County: 8.1 %Dorchester County8.1Kent County: 8 %Kent County8Montgomery County: 8 %Montgomery County8Wicomico County: 8 %Wicomico County8Baltimore city: 7.8 %Baltimore city7.8Talbot County: 7.7 %Talbot County7.7Garrett County: 7.6 %Garrett County7.6Somerset County: 7.5 %Somerset County7.5Washington County: 7.5 %Washington County7.5Baltimore County: 6.9 %Baltimore County6.9Worcester County: 6.8 %Worcester County6.8Allegany County: 6.5 %Allegany County6.5Queen Anne's County: 6 %Queen Anne's County6Cecil County: 5.7 %Cecil County5.7Anne Arundel County: 5.4 %Anne Arundel County5.4Frederick County: 5.4 %Frederick County5.4St. Mary's County: 5.1 %St. Mary's County5.1Charles County: 4.9 %Charles County4.9Howard County: 4.7 %Howard County4.7Carroll County: 4.4 %Carroll County4.4Harford County: 4.4 %Harford County4.4Calvert County: 4.1 %Calvert County4.1
%. 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

RankCounties2024 (%)Change on 2023
1Prince George's County11.2-0.2 pts
2Caroline County9.2+0.5 pts
3Dorchester County8.1-0.1 pts
4Kent County8+0.8 pts
4Montgomery County8+0.1 pts
4Wicomico County8-0.3 pts
7Baltimore city7.8+0.6 pts
8Talbot County7.7+0.4 pts
9Garrett County7.6-0.4 pts
10Somerset County7.5+0.3 pts
10Washington County7.50 pts
12Baltimore County6.9+0.5 pts
13Worcester County6.80 pts
14Allegany County6.5+0.4 pts
15Queen Anne's County6+0.1 pts
16Cecil County5.7+0.4 pts
17Anne Arundel County5.4-0.2 pts
17Frederick County5.4-0.3 pts
19St. Mary's County5.1-0.3 pts
20Charles County4.9-0.5 pts
21Howard County4.7+0.2 pts
22Carroll County4.40 pts
22Harford County4.4-0.5 pts
24Calvert County4.10 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-2024-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), 2024) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-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), 2024. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/maryland-counties. 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), 2024. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/maryland-counties.

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), 2024 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-under-65/maryland-counties (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_maryland_by_2024,
  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), 2024}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/maryland-counties. 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-2024-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), 2024
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-2024-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-under-65/maryland-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/maryland-counties.
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-2024-csv.zip. Retrieved 2026-10-12.
ER  -
Embed this chart

Paste this code into a web page or a blog post. The chart shows the latest figures as they are published, with the source and a link back to this page.

Sites that read oEmbed links, such as WordPress, can show the chart when you paste the link to this page.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in Maryland by uninsured rate, under 65 (US model-based estimate) using official data, and cite the source.
rank_places {"indicator":"uninsured_rate_under_65","level":"province","within":"Maryland","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=uninsured_rate_under_65&level=province&within=Maryland&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

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

Prince George's County, with 11.2% in 2024, according to the U.S. Census Bureau.

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

Calvert County, with 4.1% in 2024.

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