Data / Rankings / Uninsured rate, ages 18 to 64 (US model-based estimate) / Counties in Montana

Counties in Montana by uninsured rate, ages 18 to 64 (US model-based estimate)

Wheatland County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 56 counties in 2022, at 19.8%. Petroleum County had the lowest, at 6.6%. The median was 13.3% and the figure for Montana was 11.8%. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest19.8Wheatland County
Lowest6.6Petroleum County
Median13.356 counties
Montana11.8History

Map of counties, 2022

Beaverhead County: 13.2 %Big Horn County: 15.7 %Blaine County: 15.8 %Broadwater County: 12.6 %Carbon County: 11.5 %Carter County: 13 %Cascade County: 12.5 %Chouteau County: 16.1 %Custer County: 13 %Daniels County: 13.5 %Dawson County: 9.7 %Deer Lodge County: 12.5 %Fallon County: 10.6 %Fergus County: 12.6 %Flathead County: 13.2 %Gallatin County: 8.9 %Garfield County: 13.3 %Glacier County: 15.8 %Golden Valley County: 13.8 %Granite County: 15 %Hill County: 15.5 %Jefferson County: 10.6 %Judith Basin County: 12.4 %Lake County: 18.1 %Lewis and Clark County: 10.5 %Liberty County: 18.8 %Lincoln County: 16.9 %McCone County: 12.5 %Madison County: 13.8 %Meagher County: 16.6 %Mineral County: 13.1 %Missoula County: 10 %Musselshell County: 13.4 %Park County: 11.3 %Petroleum County: 6.6 %Phillips County: 12.8 %Pondera County: 16 %Powder River County: 15.2 %Powell County: 14.4 %Prairie County: 17.3 %Ravalli County: 13.2 %Richland County: 11.5 %Roosevelt County: 16.3 %Rosebud County: 13.1 %Sanders County: 18.3 %Sheridan County: 13.4 %Silver Bow County: 11.2 %Stillwater County: 9.9 %Sweet Grass County: 11.2 %Teton County: 13.3 %Toole County: 14.8 %Treasure County: 14.5 %Valley County: 15.4 %Wheatland County: 19.8 %Wibaux County: 13.9 %Yellowstone County: 10.5 %
  • Under 11
  • 11 to 13
  • 13 to 14
  • 14 to 16
  • 16 and over
%, 2022. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2022

Wheatland County: 19.8 %Wheatland County19.8Liberty County: 18.8 %Liberty County18.8Sanders County: 18.3 %Sanders County18.3Lake County: 18.1 %Lake County18.1Prairie County: 17.3 %Prairie County17.3Lincoln County: 16.9 %Lincoln County16.9Meagher County: 16.6 %Meagher County16.6Roosevelt County: 16.3 %Roosevelt County16.3Chouteau County: 16.1 %Chouteau County16.1Pondera County: 16 %Pondera County16Blaine County: 15.8 %Blaine County15.8Glacier County: 15.8 %Glacier County15.8Big Horn County: 15.7 %Big Horn County15.7Hill County: 15.5 %Hill County15.5Valley County: 15.4 %Valley County15.4Powder River County: 15.2 %Powder River County15.2Granite County: 15 %Granite County15Toole County: 14.8 %Toole County14.8Treasure County: 14.5 %Treasure County14.5Powell County: 14.4 %Powell County14.4Wibaux County: 13.9 %Wibaux County13.9Golden Valley County: 13.8 %Golden Valley County13.8Madison County: 13.8 %Madison County13.8Daniels County: 13.5 %Daniels County13.5Musselshell County: 13.4 %Musselshell County13.4Sheridan County: 13.4 %Sheridan County13.4Garfield County: 13.3 %Garfield County13.3Teton County: 13.3 %Teton County13.3Beaverhead County: 13.2 %Beaverhead County13.2Flathead County: 13.2 %Flathead County13.2Ravalli County: 13.2 %Ravalli County13.2Mineral County: 13.1 %Mineral County13.1Rosebud County: 13.1 %Rosebud County13.1Carter County: 13 %Carter County13Custer County: 13 %Custer County13Phillips County: 12.8 %Phillips County12.8Broadwater County: 12.6 %Broadwater County12.6Fergus County: 12.6 %Fergus County12.6Cascade County: 12.5 %Cascade County12.5Deer Lodge County: 12.5 %Deer Lodge County12.5McCone County: 12.5 %McCone County12.5Judith Basin County: 12.4 %Judith Basin County12.4Carbon County: 11.5 %Carbon County11.5Richland County: 11.5 %Richland County11.5Park County: 11.3 %Park County11.3Silver Bow County: 11.2 %Silver Bow County11.2Sweet Grass County: 11.2 %Sweet Grass County11.2Fallon County: 10.6 %Fallon County10.6Jefferson County: 10.6 %Jefferson County10.6Lewis and Clark County: 10.5 %Lewis and Clark County10.5Yellowstone County: 10.5 %Yellowstone County10.5Missoula County: 10 %Missoula County10Stillwater County: 9.9 %Stillwater County9.9Dawson County: 9.7 %Dawson County9.7Gallatin County: 8.9 %Gallatin County8.9Petroleum County: 6.6 %Petroleum County6.6Wheatland County: 19.8 %Wheatland County19.8Liberty County: 18.8 %Liberty County18.8Sanders County: 18.3 %Sanders County18.3Lake County: 18.1 %Lake County18.1Prairie County: 17.3 %Prairie County17.3Lincoln County: 16.9 %Lincoln County16.9Meagher County: 16.6 %Meagher County16.6Roosevelt County: 16.3 %Roosevelt County16.3Chouteau County: 16.1 %Chouteau County16.1Pondera County: 16 %Pondera County16Blaine County: 15.8 %Blaine County15.8Glacier County: 15.8 %Glacier County15.8Big Horn County: 15.7 %Big Horn County15.7Hill County: 15.5 %Hill County15.5Valley County: 15.4 %Valley County15.4Powder River County: 15.2 %Powder River County15.2Granite County: 15 %Granite County15Toole County: 14.8 %Toole County14.8Treasure County: 14.5 %Treasure County14.5Powell County: 14.4 %Powell County14.4Wibaux County: 13.9 %Wibaux County13.9Golden Valley County: 13.8 %Golden Valley County13.8Madison County: 13.8 %Madison County13.8Daniels County: 13.5 %Daniels County13.5Musselshell County: 13.4 %Musselshell County13.4Sheridan County: 13.4 %Sheridan County13.4Garfield County: 13.3 %Garfield County13.3Teton County: 13.3 %Teton County13.3Beaverhead County: 13.2 %Beaverhead County13.2Flathead County: 13.2 %Flathead County13.2Ravalli County: 13.2 %Ravalli County13.2Mineral County: 13.1 %Mineral County13.1Rosebud County: 13.1 %Rosebud County13.1Carter County: 13 %Carter County13Custer County: 13 %Custer County13Phillips County: 12.8 %Phillips County12.8Broadwater County: 12.6 %Broadwater County12.6Fergus County: 12.6 %Fergus County12.6Cascade County: 12.5 %Cascade County12.5Deer Lodge County: 12.5 %Deer Lodge County12.5McCone County: 12.5 %McCone County12.5Judith Basin County: 12.4 %Judith Basin County12.4Carbon County: 11.5 %Carbon County11.5Richland County: 11.5 %Richland County11.5Park County: 11.3 %Park County11.3Silver Bow County: 11.2 %Silver Bow County11.2Sweet Grass County: 11.2 %Sweet Grass County11.2Fallon County: 10.6 %Fallon County10.6Jefferson County: 10.6 %Jefferson County10.6Lewis and Clark County: 10.5 %Lewis and Clark County10.5Yellowstone County: 10.5 %Yellowstone County10.5Missoula County: 10 %Missoula County10Stillwater County: 9.9 %Stillwater County9.9Dawson County: 9.7 %Dawson County9.7Gallatin County: 8.9 %Gallatin County8.9Petroleum County: 6.6 %Petroleum County6.6
%. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Full ranking

RankCounties2022 (%)Change on 2021
1Wheatland County19.8+1.5 pts
2Liberty County18.8-0.9 pts
3Sanders County18.3+0.9 pts
4Lake County18.1+0.1 pts
5Prairie County17.3-1.1 pts
6Lincoln County16.9+2.2 pts
7Meagher County16.6+1 pts
8Roosevelt County16.3-3.3 pts
9Chouteau County16.1+0.6 pts
10Pondera County16+2.2 pts
11Blaine County15.8-2.8 pts
11Glacier County15.8-6.3 pts
13Big Horn County15.7-4.3 pts
14Hill County15.5+1.7 pts
15Valley County15.4+3.4 pts
16Powder River County15.2-0.2 pts
17Granite County15-1.3 pts
18Toole County14.8+1.2 pts
19Treasure County14.50 pts
20Powell County14.4+3 pts
21Wibaux County13.9+2.1 pts
22Golden Valley County13.8+0.3 pts
22Madison County13.8+0.1 pts
24Daniels County13.5+2.9 pts
25Musselshell County13.4-0.6 pts
25Sheridan County13.4+2 pts
27Garfield County13.3-0.9 pts
27Teton County13.3+0.1 pts
29Beaverhead County13.2+1.1 pts
29Flathead County13.2+1 pts
29Ravalli County13.2-0.4 pts
32Mineral County13.1-1.2 pts
32Rosebud County13.1-4.7 pts
34Carter County13+1.5 pts
34Custer County13+1.7 pts
36Phillips County12.8-1.5 pts
37Broadwater County12.6+0.3 pts
37Fergus County12.6+0.6 pts
39Cascade County12.5+0.2 pts
39Deer Lodge County12.5+0.6 pts
39McCone County12.5+0.5 pts
42Judith Basin County12.4+1.6 pts
43Carbon County11.5-0.4 pts
43Richland County11.5+1.5 pts
45Park County11.3+0.9 pts
46Silver Bow County11.2+0.9 pts
46Sweet Grass County11.2+0.5 pts
48Fallon County10.6-2.2 pts
48Jefferson County10.6+0.4 pts
50Lewis and Clark County10.5+1 pts
50Yellowstone County10.5-0.4 pts
52Missoula County100 pts
53Stillwater County9.9-0.6 pts
54Dawson County9.7-0.4 pts
55Gallatin County8.9+0.1 pts
56Petroleum County6.6-0.7 pts

Other periods

About this ranking

People aged 18 to 64 without health insurance coverage of any kind, as a percentage of all people aged 18 to 64. 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. Working-age adults; the rate for everyone under 65 is uninsured_rate_under_65.

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, ages 18 to 64, 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, ages 18 to 64, all races, both sexes, all income levels, states and counties (Counties in Montana by uninsured rate, ages 18 to 64 (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, ages 18 to 64, all races, both sexes, all income levels, states and counties, Counties in Montana by uninsured rate, ages 18 to 64 (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-ages-18-64/montana-counties?period=2022. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Counties in Montana by uninsured rate, ages 18 to 64 (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-ages-18-64/montana-counties?period=2022.

Harvard

U.S. Census Bureau (2026) Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties, Counties in Montana by uninsured rate, ages 18 to 64 (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-ages-18-64/montana-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_montana_by_2022,
  author = {{U.S. Census Bureau}},
  title = {{Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties: Counties in Montana by uninsured rate, ages 18 to 64 (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-ages-18-64/montana-counties?period=2022. Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, 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, ages 18 to 64, all races, both sexes, all income levels, states and counties: Counties in Montana by uninsured rate, ages 18 to 64 (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-ages-18-64/montana-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/montana-counties?period=2022.
N1  - Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, 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  -
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 Montana by uninsured rate, ages 18 to 64 (US model-based estimate) using official data, and cite the source.
rank_places {"indicator":"uninsured_rate_18_64","level":"province","within":"Montana","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=uninsured_rate_18_64&level=province&within=Montana&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, ages 18 to 64 (US model-based estimate)?

Wheatland County, with 19.8% in 2022, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, ages 18 to 64 (US model-based estimate)?

Petroleum County, with 6.6% 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, ages 18 to 64, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Uninsured rate, ages 18 to 64 (US model-based estimate): other rankings

Counties in Montana: more rankings