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)

Liberty County had the highest uninsured rate, under 19 (US model-based estimate) of 56 counties in 2017, at 20.8%. Gallatin County had the lowest, at 4.3%. The median was 8.6% and the figure for Montana was 6.1%. Source: the U.S. Census Bureau.

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Highest20.8Liberty County
Lowest4.3Gallatin County
Median8.656 counties
Montana6.1History

Map of counties, 2017

Beaverhead County: 7.5 %Big Horn County: 9.9 %Blaine County: 10 %Broadwater County: 8.7 %Carbon County: 9.8 %Carter County: 11.3 %Cascade County: 4.8 %Chouteau County: 11.1 %Custer County: 5.2 %Daniels County: 8.8 %Dawson County: 5.1 %Deer Lodge County: 5.2 %Fallon County: 7.4 %Fergus County: 7.1 %Flathead County: 5.4 %Gallatin County: 4.3 %Garfield County: 18.1 %Glacier County: 10.2 %Golden Valley County: 13.4 %Granite County: 11.6 %Hill County: 7 %Jefferson County: 5.9 %Judith Basin County: 10.7 %Lake County: 7.8 %Lewis and Clark County: 4.5 %Liberty County: 20.8 %Lincoln County: 7.3 %McCone County: 20.2 %Madison County: 10 %Meagher County: 8.7 %Mineral County: 6.9 %Missoula County: 4.4 %Musselshell County: 7.7 %Park County: 6.4 %Petroleum County: 12.6 %Phillips County: 10.5 %Pondera County: 7.9 %Powder River County: 14 %Powell County: 6.6 %Prairie County: 9.2 %Ravalli County: 7.5 %Richland County: 8.1 %Roosevelt County: 10.6 %Rosebud County: 9 %Sanders County: 10.5 %Sheridan County: 8.6 %Silver Bow County: 4.8 %Stillwater County: 5.9 %Sweet Grass County: 8.2 %Teton County: 8.7 %Toole County: 8.9 %Treasure County: 12.2 %Valley County: 8 %Wheatland County: 11.7 %Wibaux County: 8.6 %Yellowstone County: 5 %
  • Under 5.5
  • 5.5 to 7.4
  • 7.4 to 8.6
  • 8.6 to 9.9
  • 9.9 to 11
  • 11 and over
%, 2017. 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, 2017

Liberty County: 20.8 %Liberty County20.8McCone County: 20.2 %McCone County20.2Garfield County: 18.1 %Garfield County18.1Powder River County: 14 %Powder River County14Golden Valley County: 13.4 %Golden Valley County13.4Petroleum County: 12.6 %Petroleum County12.6Treasure County: 12.2 %Treasure County12.2Wheatland County: 11.7 %Wheatland County11.7Granite County: 11.6 %Granite County11.6Carter County: 11.3 %Carter County11.3Chouteau County: 11.1 %Chouteau County11.1Judith Basin County: 10.7 %Judith Basin County10.7Roosevelt County: 10.6 %Roosevelt County10.6Phillips County: 10.5 %Phillips County10.5Sanders County: 10.5 %Sanders County10.5Glacier County: 10.2 %Glacier County10.2Blaine County: 10 %Blaine County10Madison County: 10 %Madison County10Big Horn County: 9.9 %Big Horn County9.9Carbon County: 9.8 %Carbon County9.8Prairie County: 9.2 %Prairie County9.2Rosebud County: 9 %Rosebud County9Toole County: 8.9 %Toole County8.9Daniels County: 8.8 %Daniels County8.8Broadwater County: 8.7 %Broadwater County8.7Meagher County: 8.7 %Meagher County8.7Teton County: 8.7 %Teton County8.7Sheridan County: 8.6 %Sheridan County8.6Wibaux County: 8.6 %Wibaux County8.6Sweet Grass County: 8.2 %Sweet Grass County8.2Richland County: 8.1 %Richland County8.1Valley County: 8 %Valley County8Pondera County: 7.9 %Pondera County7.9Lake County: 7.8 %Lake County7.8Musselshell County: 7.7 %Musselshell County7.7Beaverhead County: 7.5 %Beaverhead County7.5Ravalli County: 7.5 %Ravalli County7.5Fallon County: 7.4 %Fallon County7.4Lincoln County: 7.3 %Lincoln County7.3Fergus County: 7.1 %Fergus County7.1Hill County: 7 %Hill County7Mineral County: 6.9 %Mineral County6.9Powell County: 6.6 %Powell County6.6Park County: 6.4 %Park County6.4Jefferson County: 5.9 %Jefferson County5.9Stillwater County: 5.9 %Stillwater County5.9Flathead County: 5.4 %Flathead County5.4Custer County: 5.2 %Custer County5.2Deer Lodge County: 5.2 %Deer Lodge County5.2Dawson County: 5.1 %Dawson County5.1Yellowstone County: 5 %Yellowstone County5Cascade County: 4.8 %Cascade County4.8Silver Bow County: 4.8 %Silver Bow County4.8Lewis and Clark County: 4.5 %Lewis and Clark County4.5Missoula County: 4.4 %Missoula County4.4Gallatin County: 4.3 %Gallatin County4.3Liberty County: 20.8 %Liberty County20.8McCone County: 20.2 %McCone County20.2Garfield County: 18.1 %Garfield County18.1Powder River County: 14 %Powder River County14Golden Valley County: 13.4 %Golden Valley County13.4Petroleum County: 12.6 %Petroleum County12.6Treasure County: 12.2 %Treasure County12.2Wheatland County: 11.7 %Wheatland County11.7Granite County: 11.6 %Granite County11.6Carter County: 11.3 %Carter County11.3Chouteau County: 11.1 %Chouteau County11.1Judith Basin County: 10.7 %Judith Basin County10.7Roosevelt County: 10.6 %Roosevelt County10.6Phillips County: 10.5 %Phillips County10.5Sanders County: 10.5 %Sanders County10.5Glacier County: 10.2 %Glacier County10.2Blaine County: 10 %Blaine County10Madison County: 10 %Madison County10Big Horn County: 9.9 %Big Horn County9.9Carbon County: 9.8 %Carbon County9.8Prairie County: 9.2 %Prairie County9.2Rosebud County: 9 %Rosebud County9Toole County: 8.9 %Toole County8.9Daniels County: 8.8 %Daniels County8.8Broadwater County: 8.7 %Broadwater County8.7Meagher County: 8.7 %Meagher County8.7Teton County: 8.7 %Teton County8.7Sheridan County: 8.6 %Sheridan County8.6Wibaux County: 8.6 %Wibaux County8.6Sweet Grass County: 8.2 %Sweet Grass County8.2Richland County: 8.1 %Richland County8.1Valley County: 8 %Valley County8Pondera County: 7.9 %Pondera County7.9Lake County: 7.8 %Lake County7.8Musselshell County: 7.7 %Musselshell County7.7Beaverhead County: 7.5 %Beaverhead County7.5Ravalli County: 7.5 %Ravalli County7.5Fallon County: 7.4 %Fallon County7.4Lincoln County: 7.3 %Lincoln County7.3Fergus County: 7.1 %Fergus County7.1Hill County: 7 %Hill County7Mineral County: 6.9 %Mineral County6.9Powell County: 6.6 %Powell County6.6Park County: 6.4 %Park County6.4Jefferson County: 5.9 %Jefferson County5.9Stillwater County: 5.9 %Stillwater County5.9Flathead County: 5.4 %Flathead County5.4Custer County: 5.2 %Custer County5.2Deer Lodge County: 5.2 %Deer Lodge County5.2Dawson County: 5.1 %Dawson County5.1Yellowstone County: 5 %Yellowstone County5Cascade County: 4.8 %Cascade County4.8Silver Bow County: 4.8 %Silver Bow County4.8Lewis and Clark County: 4.5 %Lewis and Clark County4.5Missoula County: 4.4 %Missoula County4.4Gallatin County: 4.3 %Gallatin County4.3
%. 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

RankCounties2017 (%)Change on 2016
1Liberty County20.8+13.5 pts
2McCone County20.2+5.6 pts
3Garfield County18.1+7.1 pts
4Powder River County14+5.2 pts
5Golden Valley County13.4+3.9 pts
6Petroleum County12.6+1.3 pts
7Treasure County12.2+4.4 pts
8Wheatland County11.7+4.4 pts
9Granite County11.6+3.2 pts
10Carter County11.3+1.2 pts
11Chouteau County11.1+1.2 pts
12Judith Basin County10.7+3.7 pts
13Roosevelt County10.6+2.5 pts
14Phillips County10.5+1.8 pts
14Sanders County10.5+1.8 pts
16Glacier County10.2+1.5 pts
17Blaine County10+0.8 pts
17Madison County10+2.4 pts
19Big Horn County9.9+1.8 pts
20Carbon County9.8+1.9 pts
21Prairie County9.2+2.3 pts
22Rosebud County9+2 pts
23Toole County8.9+3.1 pts
24Daniels County8.8+1.1 pts
25Broadwater County8.7+1.9 pts
25Meagher County8.7+2.7 pts
25Teton County8.7+2 pts
28Sheridan County8.6+2.4 pts
28Wibaux County8.6+3.3 pts
30Sweet Grass County8.2+1.5 pts
31Richland County8.1+1.8 pts
32Valley County8+0.8 pts
33Pondera County7.9+1.7 pts
34Lake County7.8+0.2 pts
35Musselshell County7.7+1.5 pts
36Beaverhead County7.5+1.5 pts
36Ravalli County7.5+2.1 pts
38Fallon County7.4+2.8 pts
39Lincoln County7.3+1.6 pts
40Fergus County7.1+1.7 pts
41Hill County7+1.4 pts
42Mineral County6.9+1.1 pts
43Powell County6.6+1 pts
44Park County6.4+1 pts
45Jefferson County5.9+0.6 pts
45Stillwater County5.9+0.7 pts
47Flathead County5.4+0.9 pts
48Custer County5.2+0.6 pts
48Deer Lodge County5.2+1.1 pts
50Dawson County5.1+1.1 pts
51Yellowstone County5+1 pts
52Cascade County4.8+0.7 pts
52Silver Bow County4.8+0.5 pts
54Lewis and Clark County4.5+0.8 pts
55Missoula County4.4+0.5 pts
56Gallatin County4.3-0.4 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-2017-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), 2017) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2017-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), 2017. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2017-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2017. 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), 2017. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2017-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2017.

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), 2017 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2017-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2017 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_montana_by_2017,
  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), 2017}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2017-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2017. 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-2017-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), 2017
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-2017-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2017
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2017.
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-2017-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)?

Liberty County, with 20.8% in 2017, according to the U.S. Census Bureau.

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

Gallatin County, with 4.3% in 2017.

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