Data / Rankings / Uninsured rate, all ages (US) / Counties in Montana

Counties in Montana by uninsured rate, all ages (US), 2024

Roosevelt County had the highest uninsured rate, all ages (US) of 56 counties in 2024, at 25.2%. Daniels County had the lowest, at 2%. The median was 7.5% and the figure for Montana was 8.6%. Source: the U.S. Census Bureau.

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Highest25.2Roosevelt County
Lowest2Daniels County
Median7.556 counties
Montana8.6History

Map of counties, 2024

Beaverhead County: 4.3 %Big Horn County: 21.7 %Blaine County: 18.3 %Broadwater County: 7.5 %Carbon County: 8.2 %Carter County: 7.5 %Cascade County: 7 %Chouteau County: 5.7 %Custer County: 7.7 %Daniels County: 2 %Dawson County: 6.6 %Deer Lodge County: 5.7 %Fallon County: 3.1 %Fergus County: 16.2 %Flathead County: 10.1 %Gallatin County: 7 %Garfield County: 9.8 %Glacier County: 23.6 %Golden Valley County: 22.9 %Granite County: 8.5 %Hill County: 8.3 %Jefferson County: 5.9 %Judith Basin County: 6.8 %Lake County: 14.5 %Lewis and Clark County: 5.7 %Liberty County: 3.4 %Lincoln County: 14.9 %McCone County: 5.3 %Madison County: 7.1 %Meagher County: 3.6 %Mineral County: 9.1 %Missoula County: 6.1 %Musselshell County: 10.1 %Park County: 8.1 %Petroleum County: 6.7 %Phillips County: 7.6 %Pondera County: 8.2 %Powder River County: 7.6 %Powell County: 6.4 %Prairie County: 4.7 %Ravalli County: 10.5 %Richland County: 4.8 %Roosevelt County: 25.2 %Rosebud County: 16.3 %Sanders County: 13.7 %Sheridan County: 7.3 %Silver Bow County: 6 %Stillwater County: 5.2 %Sweet Grass County: 10.3 %Teton County: 5.4 %Toole County: 8.3 %Treasure County: 4.1 %Valley County: 6.4 %Wheatland County: 17.9 %Wibaux County: 6.5 %Yellowstone County: 7.7 %
  • Under 5.3
  • 5.3 to 6.5
  • 6.5 to 7.5
  • 7.5 to 8.3
  • 8.3 to 14
  • 14 and over
%, 2024. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2024

Roosevelt County: 25.2 %Roosevelt County25.2Glacier County: 23.6 %Glacier County23.6Golden Valley County: 22.9 %Golden Valley County22.9Big Horn County: 21.7 %Big Horn County21.7Blaine County: 18.3 %Blaine County18.3Wheatland County: 17.9 %Wheatland County17.9Rosebud County: 16.3 %Rosebud County16.3Fergus County: 16.2 %Fergus County16.2Lincoln County: 14.9 %Lincoln County14.9Lake County: 14.5 %Lake County14.5Sanders County: 13.7 %Sanders County13.7Ravalli County: 10.5 %Ravalli County10.5Sweet Grass County: 10.3 %Sweet Grass County10.3Musselshell County: 10.1 %Musselshell County10.1Flathead County: 10.1 %Flathead County10.1Garfield County: 9.8 %Garfield County9.8Mineral County: 9.1 %Mineral County9.1Granite County: 8.5 %Granite County8.5Hill County: 8.3 %Hill County8.3Toole County: 8.3 %Toole County8.3Carbon County: 8.2 %Carbon County8.2Pondera County: 8.2 %Pondera County8.2Park County: 8.1 %Park County8.1Yellowstone County: 7.7 %Yellowstone County7.7Custer County: 7.7 %Custer County7.7Phillips County: 7.6 %Phillips County7.6Powder River County: 7.6 %Powder River County7.6Broadwater County: 7.5 %Broadwater County7.5Carter County: 7.5 %Carter County7.5Sheridan County: 7.3 %Sheridan County7.3Madison County: 7.1 %Madison County7.1Cascade County: 7 %Cascade County7Gallatin County: 7 %Gallatin County7Judith Basin County: 6.8 %Judith Basin County6.8Petroleum County: 6.7 %Petroleum County6.7Dawson County: 6.6 %Dawson County6.6Wibaux County: 6.5 %Wibaux County6.5Powell County: 6.4 %Powell County6.4Valley County: 6.4 %Valley County6.4Missoula County: 6.1 %Missoula County6.1Silver Bow County: 6 %Silver Bow County6Jefferson County: 5.9 %Jefferson County5.9Chouteau County: 5.7 %Chouteau County5.7Lewis and Clark County: 5.7 %Lewis and Clark County5.7Deer Lodge County: 5.7 %Deer Lodge County5.7Teton County: 5.4 %Teton County5.4McCone County: 5.3 %McCone County5.3Stillwater County: 5.2 %Stillwater County5.2Richland County: 4.8 %Richland County4.8Prairie County: 4.7 %Prairie County4.7Beaverhead County: 4.3 %Beaverhead County4.3Treasure County: 4.1 %Treasure County4.1Meagher County: 3.6 %Meagher County3.6Liberty County: 3.4 %Liberty County3.4Fallon County: 3.1 %Fallon County3.1Daniels County: 2 %Daniels County2Roosevelt County: 25.2 %Roosevelt County25.2Glacier County: 23.6 %Glacier County23.6Golden Valley County: 22.9 %Golden Valley County22.9Big Horn County: 21.7 %Big Horn County21.7Blaine County: 18.3 %Blaine County18.3Wheatland County: 17.9 %Wheatland County17.9Rosebud County: 16.3 %Rosebud County16.3Fergus County: 16.2 %Fergus County16.2Lincoln County: 14.9 %Lincoln County14.9Lake County: 14.5 %Lake County14.5Sanders County: 13.7 %Sanders County13.7Ravalli County: 10.5 %Ravalli County10.5Sweet Grass County: 10.3 %Sweet Grass County10.3Musselshell County: 10.1 %Musselshell County10.1Flathead County: 10.1 %Flathead County10.1Garfield County: 9.8 %Garfield County9.8Mineral County: 9.1 %Mineral County9.1Granite County: 8.5 %Granite County8.5Hill County: 8.3 %Hill County8.3Toole County: 8.3 %Toole County8.3Carbon County: 8.2 %Carbon County8.2Pondera County: 8.2 %Pondera County8.2Park County: 8.1 %Park County8.1Yellowstone County: 7.7 %Yellowstone County7.7Custer County: 7.7 %Custer County7.7Phillips County: 7.6 %Phillips County7.6Powder River County: 7.6 %Powder River County7.6Broadwater County: 7.5 %Broadwater County7.5Carter County: 7.5 %Carter County7.5Sheridan County: 7.3 %Sheridan County7.3Madison County: 7.1 %Madison County7.1Cascade County: 7 %Cascade County7Gallatin County: 7 %Gallatin County7Judith Basin County: 6.8 %Judith Basin County6.8Petroleum County: 6.7 %Petroleum County6.7Dawson County: 6.6 %Dawson County6.6Wibaux County: 6.5 %Wibaux County6.5Powell County: 6.4 %Powell County6.4Valley County: 6.4 %Valley County6.4Missoula County: 6.1 %Missoula County6.1Silver Bow County: 6 %Silver Bow County6Jefferson County: 5.9 %Jefferson County5.9Chouteau County: 5.7 %Chouteau County5.7Lewis and Clark County: 5.7 %Lewis and Clark County5.7Deer Lodge County: 5.7 %Deer Lodge County5.7Teton County: 5.4 %Teton County5.4McCone County: 5.3 %McCone County5.3Stillwater County: 5.2 %Stillwater County5.2Richland County: 4.8 %Richland County4.8Prairie County: 4.7 %Prairie County4.7Beaverhead County: 4.3 %Beaverhead County4.3Treasure County: 4.1 %Treasure County4.1Meagher County: 3.6 %Meagher County3.6Liberty County: 3.4 %Liberty County3.4Fallon County: 3.1 %Fallon County3.1Daniels County: 2 %Daniels County2
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2024 (%)Change on 2023
1Roosevelt County25.2-4.4 pts
2Glacier County23.6-5.7 pts
3Golden Valley County22.9+7.7 pts
4Big Horn County21.7+3.1 pts
5Blaine County18.3+1.1 pts
6Wheatland County17.9+0.3 pts
7Rosebud County16.3+1.2 pts
8Fergus County16.2+1.1 pts
9Lincoln County14.9+0.7 pts
10Lake County14.5+0.4 pts
11Sanders County13.7+0.3 pts
12Ravalli County10.5+1.6 pts
13Sweet Grass County10.3+1 pts
14Musselshell County10.1+1.1 pts
15Flathead County10.1+0.9 pts
16Garfield County9.8-1.1 pts
17Mineral County9.1+0.8 pts
18Granite County8.5+0.6 pts
19Hill County8.3-0.4 pts
20Toole County8.3+0.6 pts
21Carbon County8.2+0.7 pts
22Pondera County8.2+0.5 pts
23Park County8.1-0.4 pts
24Yellowstone County7.7+0.8 pts
25Custer County7.7+0.1 pts
26Phillips County7.6+0.1 pts
27Powder River County7.6+2 pts
28Broadwater County7.5+0.9 pts
29Carter County7.5-1.4 pts
30Sheridan County7.3-2.3 pts
31Madison County7.1-0.3 pts
32Cascade County7+0.3 pts
33Gallatin County7-0.4 pts
34Judith Basin County6.8+0.4 pts
35Petroleum County6.7+0.5 pts
36Dawson County6.6+1.1 pts
37Wibaux County6.5+0.3 pts
38Powell County6.4-1.2 pts
39Valley County6.4-0 pts
40Missoula County6.1-0.4 pts
41Silver Bow County6-0.6 pts
42Jefferson County5.9+0.7 pts
43Chouteau County5.7-0.2 pts
44Lewis and Clark County5.7-0.5 pts
45Deer Lodge County5.7-1.1 pts
46Teton County5.4-0.1 pts
47McCone County5.3-0.5 pts
48Stillwater County5.2+0.6 pts
49Richland County4.8-1.3 pts
50Prairie County4.7-1 pts
51Beaverhead County4.3-1.3 pts
52Treasure County4.1-1.3 pts
53Meagher County3.6+0.4 pts
54Liberty County3.4-1 pts
55Fallon County3.1-5.3 pts
56Daniels County2-0.3 pts

Other periods

About this ranking

People without health insurance coverage of any kind, as a percentage of the civilian noninstitutionalized population. 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 with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-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 with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs (Counties in Montana by uninsured rate, all ages (US), 2024) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat

MLA 9

American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs, Counties in Montana by uninsured rate, all ages (US), 2024. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat. Invokely, https://invokely.ai/rankings/uninsured-rate/montana-counties. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs. Counties in Montana by uninsured rate, all ages (US), 2024. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate/montana-counties.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs, Counties in Montana by uninsured rate, all ages (US), 2024 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat, via Invokely: https://invokely.ai/rankings/uninsured-rate/montana-counties (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_montana_by_2024,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs: Counties in Montana by uninsured rate, all ages (US), 2024}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate/montana-counties. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs: Counties in Montana by uninsured rate, all ages (US), 2024
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat
L2  - https://invokely.ai/rankings/uninsured-rate/montana-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate/montana-counties.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest uninsured rate, all ages (US)?

Roosevelt County, with 25.2% in 2024, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, all ages (US)?

Daniels County, with 2% 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, American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs. Retrieved 2026-10-12.

Uninsured rate, all ages (US): other rankings

Counties in Montana: more rankings