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

Liberty County had the highest uninsured rate, under 65 (US model-based estimate) of 56 counties in 2023, at 17.1%. Daniels County had the lowest, at 8.7%. The median was 11.6% and the figure for Montana was 10.6%. Source: the U.S. Census Bureau.

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Highest17.1Liberty County
Median11.656 counties
Montana10.6History

Map of counties, 2023

Beaverhead County: 10.9 %Big Horn County: 13.4 %Blaine County: 13.6 %Broadwater County: 10.7 %Carbon County: 11.6 %Carter County: 13.1 %Cascade County: 9.8 %Chouteau County: 15.1 %Custer County: 11.3 %Daniels County: 8.7 %Dawson County: 9.7 %Deer Lodge County: 9.8 %Fallon County: 9.6 %Fergus County: 13 %Flathead County: 11.1 %Gallatin County: 8.9 %Garfield County: 15.7 %Glacier County: 13.4 %Golden Valley County: 14 %Granite County: 16 %Hill County: 12.2 %Jefferson County: 9.9 %Judith Basin County: 13.1 %Lake County: 13.5 %Lewis and Clark County: 9.6 %Liberty County: 17.1 %Lincoln County: 14 %McCone County: 11.1 %Madison County: 11.4 %Meagher County: 12.1 %Mineral County: 12.5 %Missoula County: 9.2 %Musselshell County: 13.8 %Park County: 9.1 %Petroleum County: 8.9 %Phillips County: 10.9 %Pondera County: 14.2 %Powder River County: 11.5 %Powell County: 11.2 %Prairie County: 15.7 %Ravalli County: 12.1 %Richland County: 9.6 %Roosevelt County: 11.6 %Rosebud County: 11.9 %Sanders County: 17 %Sheridan County: 12.3 %Silver Bow County: 9.5 %Stillwater County: 10.1 %Sweet Grass County: 9.8 %Teton County: 12.7 %Toole County: 14.1 %Treasure County: 11.6 %Valley County: 12.7 %Wheatland County: 16.2 %Wibaux County: 11 %Yellowstone County: 10.1 %
  • Under 9.7
  • 9.7 to 11
  • 11 to 12
  • 12 to 13
  • 13 to 14
  • 14 and over
%, 2023. 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, 2023

Liberty County: 17.1 %Liberty County17.1Sanders County: 17 %Sanders County17Wheatland County: 16.2 %Wheatland County16.2Granite County: 16 %Granite County16Garfield County: 15.7 %Garfield County15.7Prairie County: 15.7 %Prairie County15.7Chouteau County: 15.1 %Chouteau County15.1Pondera County: 14.2 %Pondera County14.2Toole County: 14.1 %Toole County14.1Golden Valley County: 14 %Golden Valley County14Lincoln County: 14 %Lincoln County14Musselshell County: 13.8 %Musselshell County13.8Blaine County: 13.6 %Blaine County13.6Lake County: 13.5 %Lake County13.5Big Horn County: 13.4 %Big Horn County13.4Glacier County: 13.4 %Glacier County13.4Carter County: 13.1 %Carter County13.1Judith Basin County: 13.1 %Judith Basin County13.1Fergus County: 13 %Fergus County13Teton County: 12.7 %Teton County12.7Valley County: 12.7 %Valley County12.7Mineral County: 12.5 %Mineral County12.5Sheridan County: 12.3 %Sheridan County12.3Hill County: 12.2 %Hill County12.2Meagher County: 12.1 %Meagher County12.1Ravalli County: 12.1 %Ravalli County12.1Rosebud County: 11.9 %Rosebud County11.9Carbon County: 11.6 %Carbon County11.6Roosevelt County: 11.6 %Roosevelt County11.6Treasure County: 11.6 %Treasure County11.6Powder River County: 11.5 %Powder River County11.5Madison County: 11.4 %Madison County11.4Custer County: 11.3 %Custer County11.3Powell County: 11.2 %Powell County11.2Flathead County: 11.1 %Flathead County11.1McCone County: 11.1 %McCone County11.1Wibaux County: 11 %Wibaux County11Beaverhead County: 10.9 %Beaverhead County10.9Phillips County: 10.9 %Phillips County10.9Broadwater County: 10.7 %Broadwater County10.7Stillwater County: 10.1 %Stillwater County10.1Yellowstone County: 10.1 %Yellowstone County10.1Jefferson County: 9.9 %Jefferson County9.9Cascade County: 9.8 %Cascade County9.8Deer Lodge County: 9.8 %Deer Lodge County9.8Sweet Grass County: 9.8 %Sweet Grass County9.8Dawson County: 9.7 %Dawson County9.7Fallon County: 9.6 %Fallon County9.6Lewis and Clark County: 9.6 %Lewis and Clark County9.6Richland County: 9.6 %Richland County9.6Silver Bow County: 9.5 %Silver Bow County9.5Missoula County: 9.2 %Missoula County9.2Park County: 9.1 %Park County9.1Gallatin County: 8.9 %Gallatin County8.9Petroleum County: 8.9 %Petroleum County8.9Daniels County: 8.7 %Daniels County8.7Liberty County: 17.1 %Liberty County17.1Sanders County: 17 %Sanders County17Wheatland County: 16.2 %Wheatland County16.2Granite County: 16 %Granite County16Garfield County: 15.7 %Garfield County15.7Prairie County: 15.7 %Prairie County15.7Chouteau County: 15.1 %Chouteau County15.1Pondera County: 14.2 %Pondera County14.2Toole County: 14.1 %Toole County14.1Golden Valley County: 14 %Golden Valley County14Lincoln County: 14 %Lincoln County14Musselshell County: 13.8 %Musselshell County13.8Blaine County: 13.6 %Blaine County13.6Lake County: 13.5 %Lake County13.5Big Horn County: 13.4 %Big Horn County13.4Glacier County: 13.4 %Glacier County13.4Carter County: 13.1 %Carter County13.1Judith Basin County: 13.1 %Judith Basin County13.1Fergus County: 13 %Fergus County13Teton County: 12.7 %Teton County12.7Valley County: 12.7 %Valley County12.7Mineral County: 12.5 %Mineral County12.5Sheridan County: 12.3 %Sheridan County12.3Hill County: 12.2 %Hill County12.2Meagher County: 12.1 %Meagher County12.1Ravalli County: 12.1 %Ravalli County12.1Rosebud County: 11.9 %Rosebud County11.9Carbon County: 11.6 %Carbon County11.6Roosevelt County: 11.6 %Roosevelt County11.6Treasure County: 11.6 %Treasure County11.6Powder River County: 11.5 %Powder River County11.5Madison County: 11.4 %Madison County11.4Custer County: 11.3 %Custer County11.3Powell County: 11.2 %Powell County11.2Flathead County: 11.1 %Flathead County11.1McCone County: 11.1 %McCone County11.1Wibaux County: 11 %Wibaux County11Beaverhead County: 10.9 %Beaverhead County10.9Phillips County: 10.9 %Phillips County10.9Broadwater County: 10.7 %Broadwater County10.7Stillwater County: 10.1 %Stillwater County10.1Yellowstone County: 10.1 %Yellowstone County10.1Jefferson County: 9.9 %Jefferson County9.9Cascade County: 9.8 %Cascade County9.8Deer Lodge County: 9.8 %Deer Lodge County9.8Sweet Grass County: 9.8 %Sweet Grass County9.8Dawson County: 9.7 %Dawson County9.7Fallon County: 9.6 %Fallon County9.6Lewis and Clark County: 9.6 %Lewis and Clark County9.6Richland County: 9.6 %Richland County9.6Silver Bow County: 9.5 %Silver Bow County9.5Missoula County: 9.2 %Missoula County9.2Park County: 9.1 %Park County9.1Gallatin County: 8.9 %Gallatin County8.9Petroleum County: 8.9 %Petroleum County8.9Daniels County: 8.7 %Daniels County8.7
%. 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

RankCounties2023 (%)Change on 2022
1Liberty County17.1+0.4 pts
2Sanders County17+0.5 pts
3Wheatland County16.2-1 pts
4Granite County16+1.9 pts
5Garfield County15.7+4 pts
5Prairie County15.7+1.1 pts
7Chouteau County15.1+1.1 pts
8Pondera County14.2+0.7 pts
9Toole County14.1+1.7 pts
10Golden Valley County14+2.2 pts
10Lincoln County14-1.2 pts
12Musselshell County13.8+2.1 pts
13Blaine County13.6+0.9 pts
14Lake County13.5-2 pts
15Big Horn County13.4+1 pts
15Glacier County13.4+0.7 pts
17Carter County13.1+1.2 pts
17Judith Basin County13.1+2 pts
19Fergus County13+1.7 pts
20Teton County12.7+1.2 pts
20Valley County12.7-0.7 pts
22Mineral County12.5+0.8 pts
23Sheridan County12.3-0.1 pts
24Hill County12.2-0.4 pts
25Meagher County12.1-2.7 pts
25Ravalli County12.1+0.2 pts
27Rosebud County11.9+0.8 pts
28Carbon County11.6+1.2 pts
28Roosevelt County11.6-1.8 pts
28Treasure County11.6-0.9 pts
31Powder River County11.5-2 pts
32Madison County11.4-1.7 pts
33Custer County11.3-0.4 pts
34Powell County11.2-1.7 pts
35Flathead County11.1-0.4 pts
35McCone County11.1+0.2 pts
37Wibaux County11-1.4 pts
38Beaverhead County10.9-1 pts
38Phillips County10.9+0.3 pts
40Broadwater County10.7-0.9 pts
41Stillwater County10.1+1.1 pts
41Yellowstone County10.1+0.9 pts
43Jefferson County9.9+0.2 pts
44Cascade County9.8-1.2 pts
44Deer Lodge County9.8-1.6 pts
44Sweet Grass County9.8-0.2 pts
47Dawson County9.7+1.3 pts
48Fallon County9.6+0.3 pts
48Lewis and Clark County9.6+0.1 pts
48Richland County9.6-0.2 pts
51Silver Bow County9.5-0.2 pts
52Missoula County9.2+0.2 pts
53Park County9.1-1.1 pts
54Gallatin County8.9+0.9 pts
54Petroleum County8.9+2.6 pts
56Daniels County8.7-3.5 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-2023-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 Montana by uninsured rate, under 65 (US model-based estimate), 2023) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2023-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 Montana by uninsured rate, under 65 (US model-based estimate), 2023. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2023-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/montana-counties?period=2023. 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 Montana by uninsured rate, under 65 (US model-based estimate), 2023. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2023-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/montana-counties?period=2023.

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 Montana by uninsured rate, under 65 (US model-based estimate), 2023 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2023-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-under-65/montana-counties?period=2023 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_montana_by_2023,
  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 Montana by uninsured rate, under 65 (US model-based estimate), 2023}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2023-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/montana-counties?period=2023. 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-2023-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 Montana by uninsured rate, under 65 (US model-based estimate), 2023
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-2023-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-under-65/montana-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/montana-counties?period=2023.
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-2023-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)?

Liberty County, with 17.1% in 2023, according to the U.S. Census Bureau.

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

Daniels County, with 8.7% in 2023.

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 Montana: more rankings