Data / Rankings / Uninsured rate, under 65 (US model-based estimate) / Counties in Idaho

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

Clark County had the highest uninsured rate, under 65 (US model-based estimate) of 44 counties in 2018, at 27.2%. Ada County had the lowest, at 9.5%. The median was 14.9% and the figure for Idaho was 13.1%. Source: the U.S. Census Bureau.

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Highest27.2Clark County
Lowest9.5Ada County
Median14.944 counties
Idaho13.1History

Map of counties, 2018

Ada County: 9.5 %Adams County: 15.6 %Bannock County: 12.5 %Bear Lake County: 10.5 %Benewah County: 14.9 %Bingham County: 15 %Blaine County: 18.3 %Boise County: 13.8 %Bonner County: 14.9 %Bonneville County: 11.5 %Boundary County: 17.6 %Butte County: 13.7 %Camas County: 14.9 %Canyon County: 16.9 %Caribou County: 10 %Cassia County: 17.4 %Clark County: 27.2 %Clearwater County: 14.1 %Custer County: 15.8 %Elmore County: 14.1 %Franklin County: 13.4 %Fremont County: 15.1 %Gem County: 16.1 %Gooding County: 20.9 %Idaho County: 16.6 %Jefferson County: 14.4 %Jerome County: 19.2 %Kootenai County: 12.4 %Latah County: 10.4 %Lemhi County: 13.8 %Lewis County: 15.3 %Lincoln County: 20.2 %Madison County: 10.9 %Minidoka County: 19.3 %Nez Perce County: 11.7 %Oneida County: 13.7 %Owyhee County: 23.7 %Payette County: 14.7 %Power County: 17.9 %Shoshone County: 15.1 %Teton County: 17.4 %Twin Falls County: 14.6 %Valley County: 14.1 %Washington County: 17.9 %
  • Under 12
  • 12 to 14
  • 14 to 15
  • 15 to 16
  • 16 to 18
  • 18 and over
%, 2018. 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, 2018

Clark County: 27.2 %Clark County27.2Owyhee County: 23.7 %Owyhee County23.7Gooding County: 20.9 %Gooding County20.9Lincoln County: 20.2 %Lincoln County20.2Minidoka County: 19.3 %Minidoka County19.3Jerome County: 19.2 %Jerome County19.2Blaine County: 18.3 %Blaine County18.3Power County: 17.9 %Power County17.9Washington County: 17.9 %Washington County17.9Boundary County: 17.6 %Boundary County17.6Cassia County: 17.4 %Cassia County17.4Teton County: 17.4 %Teton County17.4Canyon County: 16.9 %Canyon County16.9Idaho County: 16.6 %Idaho County16.6Gem County: 16.1 %Gem County16.1Custer County: 15.8 %Custer County15.8Adams County: 15.6 %Adams County15.6Lewis County: 15.3 %Lewis County15.3Fremont County: 15.1 %Fremont County15.1Shoshone County: 15.1 %Shoshone County15.1Bingham County: 15 %Bingham County15Benewah County: 14.9 %Benewah County14.9Bonner County: 14.9 %Bonner County14.9Camas County: 14.9 %Camas County14.9Payette County: 14.7 %Payette County14.7Twin Falls County: 14.6 %Twin Falls County14.6Jefferson County: 14.4 %Jefferson County14.4Clearwater County: 14.1 %Clearwater County14.1Elmore County: 14.1 %Elmore County14.1Valley County: 14.1 %Valley County14.1Boise County: 13.8 %Boise County13.8Lemhi County: 13.8 %Lemhi County13.8Butte County: 13.7 %Butte County13.7Oneida County: 13.7 %Oneida County13.7Franklin County: 13.4 %Franklin County13.4Bannock County: 12.5 %Bannock County12.5Kootenai County: 12.4 %Kootenai County12.4Nez Perce County: 11.7 %Nez Perce County11.7Bonneville County: 11.5 %Bonneville County11.5Madison County: 10.9 %Madison County10.9Bear Lake County: 10.5 %Bear Lake County10.5Latah County: 10.4 %Latah County10.4Caribou County: 10 %Caribou County10Ada County: 9.5 %Ada County9.5Clark County: 27.2 %Clark County27.2Owyhee County: 23.7 %Owyhee County23.7Gooding County: 20.9 %Gooding County20.9Lincoln County: 20.2 %Lincoln County20.2Minidoka County: 19.3 %Minidoka County19.3Jerome County: 19.2 %Jerome County19.2Blaine County: 18.3 %Blaine County18.3Power County: 17.9 %Power County17.9Washington County: 17.9 %Washington County17.9Boundary County: 17.6 %Boundary County17.6Cassia County: 17.4 %Cassia County17.4Teton County: 17.4 %Teton County17.4Canyon County: 16.9 %Canyon County16.9Idaho County: 16.6 %Idaho County16.6Gem County: 16.1 %Gem County16.1Custer County: 15.8 %Custer County15.8Adams County: 15.6 %Adams County15.6Lewis County: 15.3 %Lewis County15.3Fremont County: 15.1 %Fremont County15.1Shoshone County: 15.1 %Shoshone County15.1Bingham County: 15 %Bingham County15Benewah County: 14.9 %Benewah County14.9Bonner County: 14.9 %Bonner County14.9Camas County: 14.9 %Camas County14.9Payette County: 14.7 %Payette County14.7Twin Falls County: 14.6 %Twin Falls County14.6Jefferson County: 14.4 %Jefferson County14.4Clearwater County: 14.1 %Clearwater County14.1Elmore County: 14.1 %Elmore County14.1Valley County: 14.1 %Valley County14.1Boise County: 13.8 %Boise County13.8Lemhi County: 13.8 %Lemhi County13.8Butte County: 13.7 %Butte County13.7Oneida County: 13.7 %Oneida County13.7Franklin County: 13.4 %Franklin County13.4Bannock County: 12.5 %Bannock County12.5Kootenai County: 12.4 %Kootenai County12.4Nez Perce County: 11.7 %Nez Perce County11.7Bonneville County: 11.5 %Bonneville County11.5Madison County: 10.9 %Madison County10.9Bear Lake County: 10.5 %Bear Lake County10.5Latah County: 10.4 %Latah County10.4Caribou County: 10 %Caribou County10Ada County: 9.5 %Ada County9.5
%. 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

RankCounties2018 (%)Change on 2017
1Clark County27.2+1 pts
2Owyhee County23.7+0.5 pts
3Gooding County20.9+1.2 pts
4Lincoln County20.2+2.6 pts
5Minidoka County19.3+1.8 pts
6Jerome County19.2-1.3 pts
7Blaine County18.3+0.6 pts
8Power County17.9+1 pts
8Washington County17.9+1.5 pts
10Boundary County17.6-0.6 pts
11Cassia County17.4+1.9 pts
11Teton County17.4+0.9 pts
13Canyon County16.9+2.3 pts
14Idaho County16.6+0.7 pts
15Gem County16.1+1.9 pts
16Custer County15.8+2 pts
17Adams County15.6+1.2 pts
18Lewis County15.3+0.9 pts
19Fremont County15.1+1.1 pts
19Shoshone County15.1+1.5 pts
21Bingham County15+0.2 pts
22Benewah County14.9+0.7 pts
22Bonner County14.9+1.6 pts
22Camas County14.9-2.6 pts
25Payette County14.7+0.6 pts
26Twin Falls County14.6+0.6 pts
27Jefferson County14.4+1.9 pts
28Clearwater County14.1+1.6 pts
28Elmore County14.1+0.6 pts
28Valley County14.1+2.3 pts
31Boise County13.8+0.5 pts
31Lemhi County13.8+1.4 pts
33Butte County13.7+1.4 pts
33Oneida County13.7+1.8 pts
35Franklin County13.4+1.6 pts
36Bannock County12.5+1.8 pts
37Kootenai County12.4+2.3 pts
38Nez Perce County11.7+1.1 pts
39Bonneville County11.5+2 pts
40Madison County10.9+2.3 pts
41Bear Lake County10.5+0.3 pts
42Latah County10.4+1.1 pts
43Caribou County10+0.9 pts
44Ada County9.5+0.8 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-2018-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 Idaho by uninsured rate, under 65 (US model-based estimate), 2018) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-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 Idaho by uninsured rate, under 65 (US model-based estimate), 2018. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/idaho-counties?period=2018. 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 Idaho by uninsured rate, under 65 (US model-based estimate), 2018. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/idaho-counties?period=2018.

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 Idaho by uninsured rate, under 65 (US model-based estimate), 2018 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-under-65/idaho-counties?period=2018 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_idaho_by_2018,
  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 Idaho by uninsured rate, under 65 (US model-based estimate), 2018}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/idaho-counties?period=2018. 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-2018-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 Idaho by uninsured rate, under 65 (US model-based estimate), 2018
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-2018-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-under-65/idaho-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/idaho-counties?period=2018.
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-2018-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)?

Clark County, with 27.2% in 2018, according to the U.S. Census Bureau.

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

Ada County, with 9.5% in 2018.

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 Idaho: more rankings