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)

McCone County had the highest uninsured rate, under 19 (US model-based estimate) of 56 counties in 2019, at 16.8%. Yellowstone County had the lowest, at 4.5%. The median was 8.6% and the figure for Montana was 6.3%. Source: the U.S. Census Bureau.

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Highest16.8McCone County
Lowest4.5Yellowstone County
Median8.656 counties
Montana6.3History

Map of counties, 2019

Beaverhead County: 7.1 %Big Horn County: 7.4 %Blaine County: 10.4 %Broadwater County: 8.1 %Carbon County: 9.1 %Carter County: 11.9 %Cascade County: 5.7 %Chouteau County: 10.5 %Custer County: 6.5 %Daniels County: 10.1 %Dawson County: 5.1 %Deer Lodge County: 6.4 %Fallon County: 10.2 %Fergus County: 7.8 %Flathead County: 5.9 %Gallatin County: 5.8 %Garfield County: 15.9 %Glacier County: 9.8 %Golden Valley County: 12.2 %Granite County: 10.2 %Hill County: 7.9 %Jefferson County: 6.6 %Judith Basin County: 11.4 %Lake County: 9.4 %Lewis and Clark County: 5 %Liberty County: 9.5 %Lincoln County: 7.6 %McCone County: 16.8 %Madison County: 10.2 %Meagher County: 8.6 %Mineral County: 6.5 %Missoula County: 4.5 %Musselshell County: 8.4 %Park County: 6.7 %Petroleum County: 11.6 %Phillips County: 12 %Pondera County: 7.2 %Powder River County: 11.1 %Powell County: 7.1 %Prairie County: 9.3 %Ravalli County: 8 %Richland County: 8.2 %Roosevelt County: 11.7 %Rosebud County: 8.3 %Sanders County: 10.3 %Sheridan County: 10.4 %Silver Bow County: 4.9 %Stillwater County: 6.3 %Sweet Grass County: 9.4 %Teton County: 8.5 %Toole County: 8.8 %Treasure County: 9.3 %Valley County: 6.5 %Wheatland County: 12.9 %Wibaux County: 10.2 %Yellowstone County: 4.5 %
  • Under 6.4
  • 6.4 to 7.5
  • 7.5 to 8.6
  • 8.6 to 10
  • 10 to 11
  • 11 and over
%, 2019. 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, 2019

McCone County: 16.8 %McCone County16.8Garfield County: 15.9 %Garfield County15.9Wheatland County: 12.9 %Wheatland County12.9Golden Valley County: 12.2 %Golden Valley County12.2Phillips County: 12 %Phillips County12Carter County: 11.9 %Carter County11.9Roosevelt County: 11.7 %Roosevelt County11.7Petroleum County: 11.6 %Petroleum County11.6Judith Basin County: 11.4 %Judith Basin County11.4Powder River County: 11.1 %Powder River County11.1Chouteau County: 10.5 %Chouteau County10.5Blaine County: 10.4 %Blaine County10.4Sheridan County: 10.4 %Sheridan County10.4Sanders County: 10.3 %Sanders County10.3Fallon County: 10.2 %Fallon County10.2Granite County: 10.2 %Granite County10.2Madison County: 10.2 %Madison County10.2Wibaux County: 10.2 %Wibaux County10.2Daniels County: 10.1 %Daniels County10.1Glacier County: 9.8 %Glacier County9.8Liberty County: 9.5 %Liberty County9.5Lake County: 9.4 %Lake County9.4Sweet Grass County: 9.4 %Sweet Grass County9.4Prairie County: 9.3 %Prairie County9.3Treasure County: 9.3 %Treasure County9.3Carbon County: 9.1 %Carbon County9.1Toole County: 8.8 %Toole County8.8Meagher County: 8.6 %Meagher County8.6Teton County: 8.5 %Teton County8.5Musselshell County: 8.4 %Musselshell County8.4Rosebud County: 8.3 %Rosebud County8.3Richland County: 8.2 %Richland County8.2Broadwater County: 8.1 %Broadwater County8.1Ravalli County: 8 %Ravalli County8Hill County: 7.9 %Hill County7.9Fergus County: 7.8 %Fergus County7.8Lincoln County: 7.6 %Lincoln County7.6Big Horn County: 7.4 %Big Horn County7.4Pondera County: 7.2 %Pondera County7.2Beaverhead County: 7.1 %Beaverhead County7.1Powell County: 7.1 %Powell County7.1Park County: 6.7 %Park County6.7Jefferson County: 6.6 %Jefferson County6.6Custer County: 6.5 %Custer County6.5Mineral County: 6.5 %Mineral County6.5Valley County: 6.5 %Valley County6.5Deer Lodge County: 6.4 %Deer Lodge County6.4Stillwater County: 6.3 %Stillwater County6.3Flathead County: 5.9 %Flathead County5.9Gallatin County: 5.8 %Gallatin County5.8Cascade County: 5.7 %Cascade County5.7Dawson County: 5.1 %Dawson County5.1Lewis and Clark County: 5 %Lewis and Clark County5Silver Bow County: 4.9 %Silver Bow County4.9Missoula County: 4.5 %Missoula County4.5Yellowstone County: 4.5 %Yellowstone County4.5McCone County: 16.8 %McCone County16.8Garfield County: 15.9 %Garfield County15.9Wheatland County: 12.9 %Wheatland County12.9Golden Valley County: 12.2 %Golden Valley County12.2Phillips County: 12 %Phillips County12Carter County: 11.9 %Carter County11.9Roosevelt County: 11.7 %Roosevelt County11.7Petroleum County: 11.6 %Petroleum County11.6Judith Basin County: 11.4 %Judith Basin County11.4Powder River County: 11.1 %Powder River County11.1Chouteau County: 10.5 %Chouteau County10.5Blaine County: 10.4 %Blaine County10.4Sheridan County: 10.4 %Sheridan County10.4Sanders County: 10.3 %Sanders County10.3Fallon County: 10.2 %Fallon County10.2Granite County: 10.2 %Granite County10.2Madison County: 10.2 %Madison County10.2Wibaux County: 10.2 %Wibaux County10.2Daniels County: 10.1 %Daniels County10.1Glacier County: 9.8 %Glacier County9.8Liberty County: 9.5 %Liberty County9.5Lake County: 9.4 %Lake County9.4Sweet Grass County: 9.4 %Sweet Grass County9.4Prairie County: 9.3 %Prairie County9.3Treasure County: 9.3 %Treasure County9.3Carbon County: 9.1 %Carbon County9.1Toole County: 8.8 %Toole County8.8Meagher County: 8.6 %Meagher County8.6Teton County: 8.5 %Teton County8.5Musselshell County: 8.4 %Musselshell County8.4Rosebud County: 8.3 %Rosebud County8.3Richland County: 8.2 %Richland County8.2Broadwater County: 8.1 %Broadwater County8.1Ravalli County: 8 %Ravalli County8Hill County: 7.9 %Hill County7.9Fergus County: 7.8 %Fergus County7.8Lincoln County: 7.6 %Lincoln County7.6Big Horn County: 7.4 %Big Horn County7.4Pondera County: 7.2 %Pondera County7.2Beaverhead County: 7.1 %Beaverhead County7.1Powell County: 7.1 %Powell County7.1Park County: 6.7 %Park County6.7Jefferson County: 6.6 %Jefferson County6.6Custer County: 6.5 %Custer County6.5Mineral County: 6.5 %Mineral County6.5Valley County: 6.5 %Valley County6.5Deer Lodge County: 6.4 %Deer Lodge County6.4Stillwater County: 6.3 %Stillwater County6.3Flathead County: 5.9 %Flathead County5.9Gallatin County: 5.8 %Gallatin County5.8Cascade County: 5.7 %Cascade County5.7Dawson County: 5.1 %Dawson County5.1Lewis and Clark County: 5 %Lewis and Clark County5Silver Bow County: 4.9 %Silver Bow County4.9Missoula County: 4.5 %Missoula County4.5Yellowstone County: 4.5 %Yellowstone County4.5
%. 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

RankCounties2019 (%)Change on 2018
1McCone County16.8+0.6 pts
2Garfield County15.9-5 pts
3Wheatland County12.9+0.4 pts
4Golden Valley County12.2+1.6 pts
5Phillips County12+2.1 pts
6Carter County11.9-1.3 pts
7Roosevelt County11.70 pts
8Petroleum County11.6+1.1 pts
9Judith Basin County11.4+3.3 pts
10Powder River County11.1+0.4 pts
11Chouteau County10.5-0.7 pts
12Blaine County10.4+1 pts
12Sheridan County10.4+0.7 pts
14Sanders County10.3-0.8 pts
15Fallon County10.2+2.2 pts
15Granite County10.2-0.6 pts
15Madison County10.2+0.8 pts
15Wibaux County10.2-4.5 pts
19Daniels County10.1+1.1 pts
20Glacier County9.8+1.8 pts
21Liberty County9.5-1.8 pts
22Lake County9.4+0.8 pts
22Sweet Grass County9.4+0.5 pts
24Prairie County9.3-0.1 pts
24Treasure County9.3+0.7 pts
26Carbon County9.1-0.3 pts
27Toole County8.8+0.6 pts
28Meagher County8.6+0.4 pts
29Teton County8.5-2.5 pts
30Musselshell County8.4+0.9 pts
31Rosebud County8.3-0.5 pts
32Richland County8.20 pts
33Broadwater County8.1+0.4 pts
34Ravalli County8-0.9 pts
35Hill County7.9+1 pts
36Fergus County7.8-2.4 pts
37Lincoln County7.6+0.2 pts
38Big Horn County7.4-0.3 pts
39Pondera County7.2+0.2 pts
40Beaverhead County7.1-1.1 pts
40Powell County7.1-0.1 pts
42Park County6.70 pts
43Jefferson County6.6+0.5 pts
44Custer County6.5+0.2 pts
44Mineral County6.5-0.3 pts
44Valley County6.5+0.3 pts
47Deer Lodge County6.4+0.5 pts
48Stillwater County6.30 pts
49Flathead County5.9+0.6 pts
50Gallatin County5.8+0.7 pts
51Cascade County5.7+0.3 pts
52Dawson County5.1-0.3 pts
53Lewis and Clark County5-0.1 pts
54Silver Bow County4.9-0.3 pts
55Missoula County4.50 pts
55Yellowstone County4.5+0.2 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-2019-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), 2019) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-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), 2019. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2019. 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), 2019. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2019.

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), 2019 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2019 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_montana_by_2019,
  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), 2019}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2019. 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-2019-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), 2019
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-2019-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2019
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2019.
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-2019-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)?

McCone County, with 16.8% in 2019, according to the U.S. Census Bureau.

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

Yellowstone County, with 4.5% in 2019.

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