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 2016, at 14.6%. Lewis and Clark County had the lowest, at 3.7%. The median was 6.5% and the figure for Montana was 5.1%. Source: the U.S. Census Bureau.

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Highest14.6McCone County
Median6.556 counties
Montana5.1History

Map of counties, 2016

Beaverhead County: 6 %Big Horn County: 8.1 %Blaine County: 9.2 %Broadwater County: 6.8 %Carbon County: 7.9 %Carter County: 10.1 %Cascade County: 4.1 %Chouteau County: 9.9 %Custer County: 4.6 %Daniels County: 7.7 %Dawson County: 4 %Deer Lodge County: 4.1 %Fallon County: 4.6 %Fergus County: 5.4 %Flathead County: 4.5 %Gallatin County: 4.7 %Garfield County: 11 %Glacier County: 8.7 %Golden Valley County: 9.5 %Granite County: 8.4 %Hill County: 5.6 %Jefferson County: 5.3 %Judith Basin County: 7 %Lake County: 7.6 %Lewis and Clark County: 3.7 %Liberty County: 7.3 %Lincoln County: 5.7 %McCone County: 14.6 %Madison County: 7.6 %Meagher County: 6 %Mineral County: 5.8 %Missoula County: 3.9 %Musselshell County: 6.2 %Park County: 5.4 %Petroleum County: 11.3 %Phillips County: 8.7 %Pondera County: 6.2 %Powder River County: 8.8 %Powell County: 5.6 %Prairie County: 6.9 %Ravalli County: 5.4 %Richland County: 6.3 %Roosevelt County: 8.1 %Rosebud County: 7 %Sanders County: 8.7 %Sheridan County: 6.2 %Silver Bow County: 4.3 %Stillwater County: 5.2 %Sweet Grass County: 6.7 %Teton County: 6.7 %Toole County: 5.8 %Treasure County: 7.8 %Valley County: 7.2 %Wheatland County: 7.3 %Wibaux County: 5.3 %Yellowstone County: 4 %
  • Under 4.6
  • 4.6 to 5.6
  • 5.6 to 6.5
  • 6.5 to 7.5
  • 7.5 to 8.7
  • 8.7 and over
%, 2016. 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, 2016

McCone County: 14.6 %McCone County14.6Petroleum County: 11.3 %Petroleum County11.3Garfield County: 11 %Garfield County11Carter County: 10.1 %Carter County10.1Chouteau County: 9.9 %Chouteau County9.9Golden Valley County: 9.5 %Golden Valley County9.5Blaine County: 9.2 %Blaine County9.2Powder River County: 8.8 %Powder River County8.8Glacier County: 8.7 %Glacier County8.7Phillips County: 8.7 %Phillips County8.7Sanders County: 8.7 %Sanders County8.7Granite County: 8.4 %Granite County8.4Big Horn County: 8.1 %Big Horn County8.1Roosevelt County: 8.1 %Roosevelt County8.1Carbon County: 7.9 %Carbon County7.9Treasure County: 7.8 %Treasure County7.8Daniels County: 7.7 %Daniels County7.7Lake County: 7.6 %Lake County7.6Madison County: 7.6 %Madison County7.6Liberty County: 7.3 %Liberty County7.3Wheatland County: 7.3 %Wheatland County7.3Valley County: 7.2 %Valley County7.2Judith Basin County: 7 %Judith Basin County7Rosebud County: 7 %Rosebud County7Prairie County: 6.9 %Prairie County6.9Broadwater County: 6.8 %Broadwater County6.8Sweet Grass County: 6.7 %Sweet Grass County6.7Teton County: 6.7 %Teton County6.7Richland County: 6.3 %Richland County6.3Musselshell County: 6.2 %Musselshell County6.2Pondera County: 6.2 %Pondera County6.2Sheridan County: 6.2 %Sheridan County6.2Beaverhead County: 6 %Beaverhead County6Meagher County: 6 %Meagher County6Mineral County: 5.8 %Mineral County5.8Toole County: 5.8 %Toole County5.8Lincoln County: 5.7 %Lincoln County5.7Hill County: 5.6 %Hill County5.6Powell County: 5.6 %Powell County5.6Fergus County: 5.4 %Fergus County5.4Park County: 5.4 %Park County5.4Ravalli County: 5.4 %Ravalli County5.4Jefferson County: 5.3 %Jefferson County5.3Wibaux County: 5.3 %Wibaux County5.3Stillwater County: 5.2 %Stillwater County5.2Gallatin County: 4.7 %Gallatin County4.7Custer County: 4.6 %Custer County4.6Fallon County: 4.6 %Fallon County4.6Flathead County: 4.5 %Flathead County4.5Silver Bow County: 4.3 %Silver Bow County4.3Cascade County: 4.1 %Cascade County4.1Deer Lodge County: 4.1 %Deer Lodge County4.1Dawson County: 4 %Dawson County4Yellowstone County: 4 %Yellowstone County4Missoula County: 3.9 %Missoula County3.9Lewis and Clark County: 3.7 %Lewis and Clark County3.7McCone County: 14.6 %McCone County14.6Petroleum County: 11.3 %Petroleum County11.3Garfield County: 11 %Garfield County11Carter County: 10.1 %Carter County10.1Chouteau County: 9.9 %Chouteau County9.9Golden Valley County: 9.5 %Golden Valley County9.5Blaine County: 9.2 %Blaine County9.2Powder River County: 8.8 %Powder River County8.8Glacier County: 8.7 %Glacier County8.7Phillips County: 8.7 %Phillips County8.7Sanders County: 8.7 %Sanders County8.7Granite County: 8.4 %Granite County8.4Big Horn County: 8.1 %Big Horn County8.1Roosevelt County: 8.1 %Roosevelt County8.1Carbon County: 7.9 %Carbon County7.9Treasure County: 7.8 %Treasure County7.8Daniels County: 7.7 %Daniels County7.7Lake County: 7.6 %Lake County7.6Madison County: 7.6 %Madison County7.6Liberty County: 7.3 %Liberty County7.3Wheatland County: 7.3 %Wheatland County7.3Valley County: 7.2 %Valley County7.2Judith Basin County: 7 %Judith Basin County7Rosebud County: 7 %Rosebud County7Prairie County: 6.9 %Prairie County6.9Broadwater County: 6.8 %Broadwater County6.8Sweet Grass County: 6.7 %Sweet Grass County6.7Teton County: 6.7 %Teton County6.7Richland County: 6.3 %Richland County6.3Musselshell County: 6.2 %Musselshell County6.2Pondera County: 6.2 %Pondera County6.2Sheridan County: 6.2 %Sheridan County6.2Beaverhead County: 6 %Beaverhead County6Meagher County: 6 %Meagher County6Mineral County: 5.8 %Mineral County5.8Toole County: 5.8 %Toole County5.8Lincoln County: 5.7 %Lincoln County5.7Hill County: 5.6 %Hill County5.6Powell County: 5.6 %Powell County5.6Fergus County: 5.4 %Fergus County5.4Park County: 5.4 %Park County5.4Ravalli County: 5.4 %Ravalli County5.4Jefferson County: 5.3 %Jefferson County5.3Wibaux County: 5.3 %Wibaux County5.3Stillwater County: 5.2 %Stillwater County5.2Gallatin County: 4.7 %Gallatin County4.7Custer County: 4.6 %Custer County4.6Fallon County: 4.6 %Fallon County4.6Flathead County: 4.5 %Flathead County4.5Silver Bow County: 4.3 %Silver Bow County4.3Cascade County: 4.1 %Cascade County4.1Deer Lodge County: 4.1 %Deer Lodge County4.1Dawson County: 4 %Dawson County4Yellowstone County: 4 %Yellowstone County4Missoula County: 3.9 %Missoula County3.9Lewis and Clark County: 3.7 %Lewis and Clark County3.7
%. 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

RankCounties2016 (%)Change on 2015
1McCone County14.6-5.3 pts
2Petroleum County11.3-6.4 pts
3Garfield County11-4.1 pts
4Carter County10.1-4.8 pts
5Chouteau County9.9-5.3 pts
6Golden Valley County9.5-3 pts
7Blaine County9.2-2.5 pts
8Powder River County8.8-3.3 pts
9Glacier County8.7-2.5 pts
9Phillips County8.7-5.3 pts
9Sanders County8.7-4.4 pts
12Granite County8.4-6.9 pts
13Big Horn County8.1-2.8 pts
13Roosevelt County8.1-4.5 pts
15Carbon County7.9-3 pts
16Treasure County7.8-7.4 pts
17Daniels County7.7-4.1 pts
18Lake County7.6-4.7 pts
18Madison County7.6-4 pts
20Liberty County7.3-2 pts
20Wheatland County7.3-8.1 pts
22Valley County7.2-3.5 pts
23Judith Basin County7-4 pts
23Rosebud County7-5.1 pts
25Prairie County6.9-5.7 pts
26Broadwater County6.8-4.8 pts
27Sweet Grass County6.7-3.9 pts
27Teton County6.7-4.4 pts
29Richland County6.3-2.4 pts
30Musselshell County6.2-3.3 pts
30Pondera County6.2-5.4 pts
30Sheridan County6.2-3.9 pts
33Beaverhead County6-3.8 pts
33Meagher County6-6.1 pts
35Mineral County5.8-3.7 pts
35Toole County5.8-4.3 pts
37Lincoln County5.7-4.9 pts
38Hill County5.6-3.5 pts
38Powell County5.6-4.3 pts
40Fergus County5.4-4 pts
40Park County5.4-4.2 pts
40Ravalli County5.4-5.8 pts
43Jefferson County5.3-3.7 pts
43Wibaux County5.3-9 pts
45Stillwater County5.2-3 pts
46Gallatin County4.7-2.5 pts
47Custer County4.6-2.8 pts
47Fallon County4.6-4 pts
49Flathead County4.5-2.8 pts
50Silver Bow County4.3-1.9 pts
51Cascade County4.1-2.1 pts
51Deer Lodge County4.1-3 pts
53Dawson County4-3.1 pts
53Yellowstone County4-2.4 pts
55Missoula County3.9-1.8 pts
56Lewis and Clark County3.7-2.9 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-2016-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), 2016) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2016-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), 2016. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2016-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2016. 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), 2016. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2016-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2016.

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), 2016 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2016-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2016 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_montana_by_2016,
  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), 2016}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2016-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2016. 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-2016-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), 2016
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-2016-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2016
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/montana-counties?period=2016.
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-2016-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 14.6% in 2016, according to the U.S. Census Bureau.

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

Lewis and Clark County, with 3.7% in 2016.

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