Data / Rankings / Uninsured rate, under 19 (US model-based estimate) / Counties in Montana

Counties in Montana by uninsured rate, under 19 (US model-based estimate)

Wheatland County had the highest uninsured rate, under 19 (US model-based estimate) of 56 counties in 2020, at 20.1%. Silver Bow County had the lowest, at 5.7%. The median was 9.5% and the figure for Montana was 7.4%. Source: the U.S. Census Bureau.

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Highest20.1Wheatland County
Lowest5.7Silver Bow County
Median9.556 counties
Montana7.4History

Map of counties, 2020

Beaverhead County: 8.5 %Big Horn County: 9.6 %Blaine County: 10.8 %Broadwater County: 10.6 %Carbon County: 8 %Carter County: 9.4 %Cascade County: 6.8 %Chouteau County: 10.9 %Custer County: 7.8 %Daniels County: 9.5 %Dawson County: 7.9 %Deer Lodge County: 7.1 %Fallon County: 13 %Fergus County: 11.7 %Flathead County: 6.3 %Gallatin County: 6 %Garfield County: 8.8 %Glacier County: 9.2 %Golden Valley County: 9.5 %Granite County: 12.3 %Hill County: 9.3 %Jefferson County: 7.5 %Judith Basin County: 9.4 %Lake County: 10.4 %Lewis and Clark County: 5.8 %Liberty County: 17.4 %Lincoln County: 9.6 %McCone County: 6.9 %Madison County: 12.3 %Meagher County: 12.3 %Mineral County: 8.9 %Missoula County: 5.7 %Musselshell County: 8 %Park County: 8.3 %Petroleum County: 9.2 %Phillips County: 11 %Pondera County: 8.1 %Powder River County: 12 %Powell County: 9.5 %Prairie County: 14.6 %Ravalli County: 10.2 %Richland County: 9.8 %Roosevelt County: 9.4 %Rosebud County: 10.7 %Sanders County: 11.1 %Sheridan County: 11.6 %Silver Bow County: 5.7 %Stillwater County: 8 %Sweet Grass County: 12.9 %Teton County: 12.8 %Toole County: 9 %Treasure County: 13.6 %Valley County: 7.3 %Wheatland County: 20.1 %Wibaux County: 11.5 %Yellowstone County: 5.8 %
  • Under 7.3
  • 7.3 to 8.6
  • 8.6 to 9.4
  • 9.4 to 11
  • 11 to 12
  • 12 and over
%, 2020. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2020

Wheatland County: 20.1 %Wheatland County20.1Liberty County: 17.4 %Liberty County17.4Prairie County: 14.6 %Prairie County14.6Treasure County: 13.6 %Treasure County13.6Fallon County: 13 %Fallon County13Sweet Grass County: 12.9 %Sweet Grass County12.9Teton County: 12.8 %Teton County12.8Granite County: 12.3 %Granite County12.3Madison County: 12.3 %Madison County12.3Meagher County: 12.3 %Meagher County12.3Powder River County: 12 %Powder River County12Fergus County: 11.7 %Fergus County11.7Sheridan County: 11.6 %Sheridan County11.6Wibaux County: 11.5 %Wibaux County11.5Sanders County: 11.1 %Sanders County11.1Phillips County: 11 %Phillips County11Chouteau County: 10.9 %Chouteau County10.9Blaine County: 10.8 %Blaine County10.8Rosebud County: 10.7 %Rosebud County10.7Broadwater County: 10.6 %Broadwater County10.6Lake County: 10.4 %Lake County10.4Ravalli County: 10.2 %Ravalli County10.2Richland County: 9.8 %Richland County9.8Big Horn County: 9.6 %Big Horn County9.6Lincoln County: 9.6 %Lincoln County9.6Daniels County: 9.5 %Daniels County9.5Golden Valley County: 9.5 %Golden Valley County9.5Powell County: 9.5 %Powell County9.5Carter County: 9.4 %Carter County9.4Judith Basin County: 9.4 %Judith Basin County9.4Roosevelt County: 9.4 %Roosevelt County9.4Hill County: 9.3 %Hill County9.3Glacier County: 9.2 %Glacier County9.2Petroleum County: 9.2 %Petroleum County9.2Toole County: 9 %Toole County9Mineral County: 8.9 %Mineral County8.9Garfield County: 8.8 %Garfield County8.8Beaverhead County: 8.5 %Beaverhead County8.5Park County: 8.3 %Park County8.3Pondera County: 8.1 %Pondera County8.1Carbon County: 8 %Carbon County8Musselshell County: 8 %Musselshell County8Stillwater County: 8 %Stillwater County8Dawson County: 7.9 %Dawson County7.9Custer County: 7.8 %Custer County7.8Jefferson County: 7.5 %Jefferson County7.5Valley County: 7.3 %Valley County7.3Deer Lodge County: 7.1 %Deer Lodge County7.1McCone County: 6.9 %McCone County6.9Cascade County: 6.8 %Cascade County6.8Flathead County: 6.3 %Flathead County6.3Gallatin County: 6 %Gallatin County6Lewis and Clark County: 5.8 %Lewis and Clark County5.8Yellowstone County: 5.8 %Yellowstone County5.8Missoula County: 5.7 %Missoula County5.7Silver Bow County: 5.7 %Silver Bow County5.7Wheatland County: 20.1 %Wheatland County20.1Liberty County: 17.4 %Liberty County17.4Prairie County: 14.6 %Prairie County14.6Treasure County: 13.6 %Treasure County13.6Fallon County: 13 %Fallon County13Sweet Grass County: 12.9 %Sweet Grass County12.9Teton County: 12.8 %Teton County12.8Granite County: 12.3 %Granite County12.3Madison County: 12.3 %Madison County12.3Meagher County: 12.3 %Meagher County12.3Powder River County: 12 %Powder River County12Fergus County: 11.7 %Fergus County11.7Sheridan County: 11.6 %Sheridan County11.6Wibaux County: 11.5 %Wibaux County11.5Sanders County: 11.1 %Sanders County11.1Phillips County: 11 %Phillips County11Chouteau County: 10.9 %Chouteau County10.9Blaine County: 10.8 %Blaine County10.8Rosebud County: 10.7 %Rosebud County10.7Broadwater County: 10.6 %Broadwater County10.6Lake County: 10.4 %Lake County10.4Ravalli County: 10.2 %Ravalli County10.2Richland County: 9.8 %Richland County9.8Big Horn County: 9.6 %Big Horn County9.6Lincoln County: 9.6 %Lincoln County9.6Daniels County: 9.5 %Daniels County9.5Golden Valley County: 9.5 %Golden Valley County9.5Powell County: 9.5 %Powell County9.5Carter County: 9.4 %Carter County9.4Judith Basin County: 9.4 %Judith Basin County9.4Roosevelt County: 9.4 %Roosevelt County9.4Hill County: 9.3 %Hill County9.3Glacier County: 9.2 %Glacier County9.2Petroleum County: 9.2 %Petroleum County9.2Toole County: 9 %Toole County9Mineral County: 8.9 %Mineral County8.9Garfield County: 8.8 %Garfield County8.8Beaverhead County: 8.5 %Beaverhead County8.5Park County: 8.3 %Park County8.3Pondera County: 8.1 %Pondera County8.1Carbon County: 8 %Carbon County8Musselshell County: 8 %Musselshell County8Stillwater County: 8 %Stillwater County8Dawson County: 7.9 %Dawson County7.9Custer County: 7.8 %Custer County7.8Jefferson County: 7.5 %Jefferson County7.5Valley County: 7.3 %Valley County7.3Deer Lodge County: 7.1 %Deer Lodge County7.1McCone County: 6.9 %McCone County6.9Cascade County: 6.8 %Cascade County6.8Flathead County: 6.3 %Flathead County6.3Gallatin County: 6 %Gallatin County6Lewis and Clark County: 5.8 %Lewis and Clark County5.8Yellowstone County: 5.8 %Yellowstone County5.8Missoula County: 5.7 %Missoula County5.7Silver Bow County: 5.7 %Silver Bow County5.7
%. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Full ranking

RankCounties2020 (%)Change on 2019
1Wheatland County20.1+7.2 pts
2Liberty County17.4+7.9 pts
3Prairie County14.6+5.3 pts
4Treasure County13.6+4.3 pts
5Fallon County13+2.8 pts
6Sweet Grass County12.9+3.5 pts
7Teton County12.8+4.3 pts
8Granite County12.3+2.1 pts
8Madison County12.3+2.1 pts
8Meagher County12.3+3.7 pts
11Powder River County12+0.9 pts
12Fergus County11.7+3.9 pts
13Sheridan County11.6+1.2 pts
14Wibaux County11.5+1.3 pts
15Sanders County11.1+0.8 pts
16Phillips County11-1 pts
17Chouteau County10.9+0.4 pts
18Blaine County10.8+0.4 pts
19Rosebud County10.7+2.4 pts
20Broadwater County10.6+2.5 pts
21Lake County10.4+1 pts
22Ravalli County10.2+2.2 pts
23Richland County9.8+1.6 pts
24Big Horn County9.6+2.2 pts
24Lincoln County9.6+2 pts
26Daniels County9.5-0.6 pts
26Golden Valley County9.5-2.7 pts
26Powell County9.5+2.4 pts
29Carter County9.4-2.5 pts
29Judith Basin County9.4-2 pts
29Roosevelt County9.4-2.3 pts
32Hill County9.3+1.4 pts
33Glacier County9.2-0.6 pts
33Petroleum County9.2-2.4 pts
35Toole County9+0.2 pts
36Mineral County8.9+2.4 pts
37Garfield County8.8-7.1 pts
38Beaverhead County8.5+1.4 pts
39Park County8.3+1.6 pts
40Pondera County8.1+0.9 pts
41Carbon County8-1.1 pts
41Musselshell County8-0.4 pts
41Stillwater County8+1.7 pts
44Dawson County7.9+2.8 pts
45Custer County7.8+1.3 pts
46Jefferson County7.5+0.9 pts
47Valley County7.3+0.8 pts
48Deer Lodge County7.1+0.7 pts
49McCone County6.9-9.9 pts
50Cascade County6.8+1.1 pts
51Flathead County6.3+0.4 pts
52Gallatin County6+0.2 pts
53Lewis and Clark County5.8+0.8 pts
53Yellowstone County5.8+1.3 pts
55Missoula County5.7+1.2 pts
55Silver Bow County5.7+0.8 pts

Other periods

About this ranking

People under 19 without health insurance coverage of any kind, as a percentage of all people under 19. 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. Under 19 matches the age limit for children in Medicaid and the Children's Health Insurance Program (CHIP).

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 19, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2020-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 19, all races, both sexes, all income levels, states and counties (Counties in Montana by uninsured rate, under 19 (US model-based estimate), 2020) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2020-csv.zip

MLA 9

Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties, Counties in Montana by uninsured rate, under 19 (US model-based estimate), 2020. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2020-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2020. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties. Counties in Montana by uninsured rate, under 19 (US model-based estimate), 2020. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2020-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2020.

Harvard

U.S. Census Bureau (2026) Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties, Counties in Montana by uninsured rate, under 19 (US model-based estimate), 2020 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2020-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2020 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_montana_by_2020,
  author = {{U.S. Census Bureau}},
  title = {{Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties: Counties in Montana by uninsured rate, under 19 (US model-based estimate), 2020}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2020-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2020. Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2020-csv.zip. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties: Counties in Montana by uninsured rate, under 19 (US model-based estimate), 2020
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-2020-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2020
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2020.
N1  - Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2020-csv.zip. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest uninsured rate, under 19 (US model-based estimate)?

Wheatland County, with 20.1% in 2020, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, under 19 (US model-based estimate)?

Silver Bow County, with 5.7% in 2020.

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 19, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Uninsured rate, under 19 (US model-based estimate): other rankings

Counties in Montana: more rankings