Data / Rankings / Uninsured rate, ages 18 to 64 (US model-based estimate) / Counties in Idaho

Counties in Idaho by uninsured rate, ages 18 to 64 (US model-based estimate)

Clark County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 44 counties in 2018, at 32%. Ada County had the lowest, at 11.6%. The median was 18.3% and the figure for Idaho was 16.3%. Source: the U.S. Census Bureau.

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Highest32Clark County
Lowest11.6Ada County
Median18.344 counties
Idaho16.3History

Map of counties, 2018

Ada County: 11.6 %Adams County: 17.9 %Bannock County: 15.3 %Bear Lake County: 12.7 %Benewah County: 18 %Bingham County: 19.4 %Blaine County: 21.4 %Boise County: 15.8 %Bonner County: 17.6 %Bonneville County: 15.2 %Boundary County: 21.2 %Butte County: 16.4 %Camas County: 17.6 %Canyon County: 22.2 %Caribou County: 12.1 %Cassia County: 23 %Clark County: 32 %Clearwater County: 16.7 %Custer County: 18.2 %Elmore County: 17.6 %Franklin County: 16.7 %Fremont County: 18.6 %Gem County: 19.5 %Gooding County: 26.5 %Idaho County: 19.7 %Jefferson County: 19.1 %Jerome County: 24.1 %Kootenai County: 15.1 %Latah County: 11.9 %Lemhi County: 16.4 %Lewis County: 19.1 %Lincoln County: 25.6 %Madison County: 13.6 %Minidoka County: 24.4 %Nez Perce County: 13.9 %Oneida County: 16.8 %Owyhee County: 29.4 %Payette County: 18.4 %Power County: 23.4 %Shoshone County: 18.3 %Teton County: 20.5 %Twin Falls County: 18.3 %Valley County: 16.2 %Washington County: 22.1 %
  • Under 15
  • 15 to 17
  • 17 to 18
  • 18 to 19
  • 19 to 23
  • 23 and over
%, 2018. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2018

Clark County: 32 %Clark County32Owyhee County: 29.4 %Owyhee County29.4Gooding County: 26.5 %Gooding County26.5Lincoln County: 25.6 %Lincoln County25.6Minidoka County: 24.4 %Minidoka County24.4Jerome County: 24.1 %Jerome County24.1Power County: 23.4 %Power County23.4Cassia County: 23 %Cassia County23Canyon County: 22.2 %Canyon County22.2Washington County: 22.1 %Washington County22.1Blaine County: 21.4 %Blaine County21.4Boundary County: 21.2 %Boundary County21.2Teton County: 20.5 %Teton County20.5Idaho County: 19.7 %Idaho County19.7Gem County: 19.5 %Gem County19.5Bingham County: 19.4 %Bingham County19.4Jefferson County: 19.1 %Jefferson County19.1Lewis County: 19.1 %Lewis County19.1Fremont County: 18.6 %Fremont County18.6Payette County: 18.4 %Payette County18.4Shoshone County: 18.3 %Shoshone County18.3Twin Falls County: 18.3 %Twin Falls County18.3Custer County: 18.2 %Custer County18.2Benewah County: 18 %Benewah County18Adams County: 17.9 %Adams County17.9Bonner County: 17.6 %Bonner County17.6Camas County: 17.6 %Camas County17.6Elmore County: 17.6 %Elmore County17.6Oneida County: 16.8 %Oneida County16.8Clearwater County: 16.7 %Clearwater County16.7Franklin County: 16.7 %Franklin County16.7Butte County: 16.4 %Butte County16.4Lemhi County: 16.4 %Lemhi County16.4Valley County: 16.2 %Valley County16.2Boise County: 15.8 %Boise County15.8Bannock County: 15.3 %Bannock County15.3Bonneville County: 15.2 %Bonneville County15.2Kootenai County: 15.1 %Kootenai County15.1Nez Perce County: 13.9 %Nez Perce County13.9Madison County: 13.6 %Madison County13.6Bear Lake County: 12.7 %Bear Lake County12.7Caribou County: 12.1 %Caribou County12.1Latah County: 11.9 %Latah County11.9Ada County: 11.6 %Ada County11.6Clark County: 32 %Clark County32Owyhee County: 29.4 %Owyhee County29.4Gooding County: 26.5 %Gooding County26.5Lincoln County: 25.6 %Lincoln County25.6Minidoka County: 24.4 %Minidoka County24.4Jerome County: 24.1 %Jerome County24.1Power County: 23.4 %Power County23.4Cassia County: 23 %Cassia County23Canyon County: 22.2 %Canyon County22.2Washington County: 22.1 %Washington County22.1Blaine County: 21.4 %Blaine County21.4Boundary County: 21.2 %Boundary County21.2Teton County: 20.5 %Teton County20.5Idaho County: 19.7 %Idaho County19.7Gem County: 19.5 %Gem County19.5Bingham County: 19.4 %Bingham County19.4Jefferson County: 19.1 %Jefferson County19.1Lewis County: 19.1 %Lewis County19.1Fremont County: 18.6 %Fremont County18.6Payette County: 18.4 %Payette County18.4Shoshone County: 18.3 %Shoshone County18.3Twin Falls County: 18.3 %Twin Falls County18.3Custer County: 18.2 %Custer County18.2Benewah County: 18 %Benewah County18Adams County: 17.9 %Adams County17.9Bonner County: 17.6 %Bonner County17.6Camas County: 17.6 %Camas County17.6Elmore County: 17.6 %Elmore County17.6Oneida County: 16.8 %Oneida County16.8Clearwater County: 16.7 %Clearwater County16.7Franklin County: 16.7 %Franklin County16.7Butte County: 16.4 %Butte County16.4Lemhi County: 16.4 %Lemhi County16.4Valley County: 16.2 %Valley County16.2Boise County: 15.8 %Boise County15.8Bannock County: 15.3 %Bannock County15.3Bonneville County: 15.2 %Bonneville County15.2Kootenai County: 15.1 %Kootenai County15.1Nez Perce County: 13.9 %Nez Perce County13.9Madison County: 13.6 %Madison County13.6Bear Lake County: 12.7 %Bear Lake County12.7Caribou County: 12.1 %Caribou County12.1Latah County: 11.9 %Latah County11.9Ada County: 11.6 %Ada County11.6
%. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Full ranking

RankCounties2018 (%)Change on 2017
1Clark County320 pts
2Owyhee County29.4-0.1 pts
3Gooding County26.5+0.4 pts
4Lincoln County25.6+2.8 pts
5Minidoka County24.4+0.8 pts
6Jerome County24.1-3.8 pts
7Power County23.4+0.2 pts
8Cassia County23+1.2 pts
9Canyon County22.2+2.3 pts
10Washington County22.1+1.2 pts
11Blaine County21.4+0.2 pts
12Boundary County21.2-0.9 pts
13Teton County20.5+0.4 pts
14Idaho County19.7+0.4 pts
15Gem County19.5+1.5 pts
16Bingham County19.4-0.6 pts
17Jefferson County19.1+1.7 pts
17Lewis County19.1+0.7 pts
19Fremont County18.6+0.6 pts
20Payette County18.4-0.2 pts
21Shoshone County18.3+1.5 pts
21Twin Falls County18.3-0.1 pts
23Custer County18.2+2.1 pts
24Benewah County18+0.5 pts
25Adams County17.9+0.9 pts
26Bonner County17.6+1.5 pts
26Camas County17.6-3.5 pts
26Elmore County17.6+0.3 pts
29Oneida County16.8+1.3 pts
30Clearwater County16.7+1.6 pts
30Franklin County16.7+0.4 pts
32Butte County16.4+1.1 pts
32Lemhi County16.4+1.3 pts
34Valley County16.2+2.4 pts
35Boise County15.8+0.1 pts
36Bannock County15.3+1.2 pts
37Bonneville County15.2+2.2 pts
38Kootenai County15.1+2.4 pts
39Nez Perce County13.9+0.8 pts
40Madison County13.6+2.5 pts
41Bear Lake County12.7-0.6 pts
42Caribou County12.1+0.1 pts
43Latah County11.9+0.7 pts
44Ada County11.6+0.5 pts

Other periods

About this ranking

People aged 18 to 64 without health insurance coverage of any kind, as a percentage of all people aged 18 to 64. 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. Working-age adults; the rate for everyone under 65 is uninsured_rate_under_65.

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, ages 18 to 64, 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, ages 18 to 64, all races, both sexes, all income levels, states and counties (Counties in Idaho by uninsured rate, ages 18 to 64 (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, ages 18 to 64, all races, both sexes, all income levels, states and counties, Counties in Idaho by uninsured rate, ages 18 to 64 (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-ages-18-64/idaho-counties?period=2018. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Counties in Idaho by uninsured rate, ages 18 to 64 (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-ages-18-64/idaho-counties?period=2018.

Harvard

U.S. Census Bureau (2026) Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties, Counties in Idaho by uninsured rate, ages 18 to 64 (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-ages-18-64/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, ages 18 to 64, all races, both sexes, all income levels, states and counties: Counties in Idaho by uninsured rate, ages 18 to 64 (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-ages-18-64/idaho-counties?period=2018. Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, 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, ages 18 to 64, all races, both sexes, all income levels, states and counties: Counties in Idaho by uninsured rate, ages 18 to 64 (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-ages-18-64/idaho-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/idaho-counties?period=2018.
N1  - Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, 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, ages 18 to 64 (US model-based estimate)?

Clark County, with 32% in 2018, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, ages 18 to 64 (US model-based estimate)?

Ada County, with 11.6% 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, ages 18 to 64, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Uninsured rate, ages 18 to 64 (US model-based estimate): other rankings

Counties in Idaho: more rankings