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

Counties in Massachusetts by uninsured rate, under 65 (US model-based estimate), 2024

Dukes County had the highest uninsured rate, under 65 (US model-based estimate) of 14 counties in 2024, at 4.9%. Norfolk County had the lowest, at 2.4%. The median was 3.2% and the figure for Massachusetts was 3.3%. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest4.9Dukes County
Lowest2.4Norfolk County
Median3.214 counties
Massachusetts3.3History

Map of counties, 2024

Barnstable County: 3.1 %Berkshire County: 3.2 %Bristol County: 4.4 %Dukes County: 4.9 %Essex County: 3.7 %Franklin County: 3.2 %Hampden County: 3.8 %Hampshire County: 2.7 %Middlesex County: 2.9 %Nantucket County: 3.9 %Norfolk County: 2.4 %Plymouth County: 3.2 %Suffolk County: 3.7 %Worcester County: 3.2 %
  • Under 3
  • 3 to 3.2
  • 3.2 to 3.6
  • 3.6 to 3.8
  • 3.8 and over
%, 2024. 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, 2024

Dukes County: 4.9 %Dukes County4.9Bristol County: 4.4 %Bristol County4.4Nantucket County: 3.9 %Nantucket County3.9Hampden County: 3.8 %Hampden County3.8Essex County: 3.7 %Essex County3.7Suffolk County: 3.7 %Suffolk County3.7Berkshire County: 3.2 %Berkshire County3.2Franklin County: 3.2 %Franklin County3.2Plymouth County: 3.2 %Plymouth County3.2Worcester County: 3.2 %Worcester County3.2Barnstable County: 3.1 %Barnstable County3.1Middlesex County: 2.9 %Middlesex County2.9Hampshire County: 2.7 %Hampshire County2.7Norfolk County: 2.4 %Norfolk County2.4Dukes County: 4.9 %Dukes County4.9Bristol County: 4.4 %Bristol County4.4Nantucket County: 3.9 %Nantucket County3.9Hampden County: 3.8 %Hampden County3.8Essex County: 3.7 %Essex County3.7Suffolk County: 3.7 %Suffolk County3.7Berkshire County: 3.2 %Berkshire County3.2Franklin County: 3.2 %Franklin County3.2Plymouth County: 3.2 %Plymouth County3.2Worcester County: 3.2 %Worcester County3.2Barnstable County: 3.1 %Barnstable County3.1Middlesex County: 2.9 %Middlesex County2.9Hampshire County: 2.7 %Hampshire County2.7Norfolk County: 2.4 %Norfolk County2.4
%. 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
1Dukes County4.9+0.1 pts
2Bristol County4.4+0.5 pts
3Nantucket County3.9+0.9 pts
4Hampden County3.80 pts
5Essex County3.7+0.1 pts
5Suffolk County3.7+0.1 pts
7Berkshire County3.2+0.4 pts
7Franklin County3.2+0.2 pts
7Plymouth County3.2+0.5 pts
7Worcester County3.20 pts
11Barnstable County3.10 pts
12Middlesex County2.9+0.5 pts
13Hampshire County2.7+0.3 pts
14Norfolk County2.4+0.3 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 Massachusetts 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 Massachusetts 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/massachusetts-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 Massachusetts 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/massachusetts-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 Massachusetts 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/massachusetts-counties (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_massachusetts_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 Massachusetts 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/massachusetts-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 Massachusetts 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/massachusetts-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/massachusetts-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 Massachusetts 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":"Massachusetts","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=uninsured_rate_under_65&level=province&within=Massachusetts&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)?

Dukes County, with 4.9% in 2024, according to the U.S. Census Bureau.

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

Norfolk County, with 2.4% 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 Massachusetts: more rankings