Clark County, Idaho

ID · FIPS 16033 Republican

Located in Idaho, Clark County has a population of 849 residents and a median age of 31.1 years, making it the #3,193 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 11.7%. The median home value is $216,900, and the median household income is $55,208, which is 27% below the national median.

849
Population
#3,193 of 3,222
$55,208
Median Income
-26.5% #2,465 of 3,222
31.1 years
Median Age
-20.1% #3,157 of 3,222
11.7%
Poverty Rate
-6.8% #1,207 of 3,222
Jump to section
Demographics
849
Economy
$55,208
Housing
$216,900
Education
20.5%
Health & Wellbeing
82.9%
Substance Use
35.7%
Safety
Families & Children
24.1%
Civic & Transportation
27.7 min
Elections
Rep +69.1%

Demographics

Clark County has a population of 849, making it the #3,193 most populous county in the US. The median age is 31.1 years, which is 20.1% below the national median.

Population Trend

Rankings →

Year-over-Year Population Growth

Age & Sex Distribution

Race & Ethnicity

Nativity

80.7%
Native Born
19.3%
Foreign Born

Geographic Mobility (Past Year)

Economy

The median household income in Clark County is $55,208, ranking #2,465 out of 3,222 counties — 26.5% below the national median. The poverty rate is 11.7% and unemployment stands at 2.1%.

Income#2,465
$55,208
-26.5%
vs nation
23th percentile
Per Capita#3,081
$22,561
-45.3%
vs nation
4th percentile
Poverty#1,207
11.7%
-6.8%
vs nation
63th percentile
Unemployment#303
2.1%
-60.8%
vs nation
91th percentile

Income Distribution

Industry of Employment

Occupation

Housing

The median home value in Clark County is $216,900 (-23.1% vs national). Renters pay a median of $773/mo and the homeownership rate is 61.3%.

Home Value#1,225
$216,900
-23.1%
vs nation
62th percentile
Rent#2,318
$773
-33.5%
vs nation
28th percentile
Homeownership#2,958
61.3%
-4.8%
vs nation
8th percentile

Household Type

Education

In Clark County, 20.5% of adults age 25+ hold a bachelor's degree or higher, which is 39.2% below the national average, ranking #1,918 out of 3,222 counties.

Bachelor's Degree or Higher
20.5% −39.2% vs nation
Rank #1,918 of 3,222
40th percentile

Bachelor's Degree or Higher Trend

Rankings →

Health & Wellbeing

23.0% of adults report poor or fair health and 21.6% lack health insurance. Data from County Health Rankings (2025).

Poor/Fair Health#2,424
23.0%
+17.6%
vs nation
23th percentile
Diabetes#1,944
11.6%
+4.2%
vs nation
38th percentile
Insufficient Sleep#931
35.0%
-6.2%
vs nation
70th percentile
Poor Mental Health Days#896
5.3
-5.9%
vs nation
72th percentile
Poor Physical Health Days#2,499
5.0
+12.4%
vs nation
21th percentile
Uninsured Rate#3,059
21.6%
+105.8%
vs nation
3th percentile
Physical Inactivity#2,176
28.9%
+9.5%
vs nation
31th percentile
Food Insecurity#687
11.6%
-19.5%
vs nation
78th percentile

Substance Use

14.6% of adults in Clark County smoke , 35.7% are obese , and 16.5% report excessive drinking.

Adult Smoking#553
14.6%
-18.7%
vs nation
82th percentile
Adult Obesity#848
35.7%
-5.8%
vs nation
73th percentile
Excessive Drinking#464
16.5%
-16.9%
vs nation
85th percentile

Safety

.

Families & Children

24.1% of children in Clark County live in poverty .

Child Poverty#2,422
24.1%
+26.9%
vs nation
23th percentile

Civic & Transportation

Voter turnout in Clark County is 67.6%. The mean commute time is 27.7 min, which is 0.3% above the national average.

Voter Turnout
67.6% NaN% vs nation
Rank #NaN of NaN
th percentile

Voter Turnout Trend

Mean Commute Time
27.7 min +0.3% vs nation
Rank #1,330 of 3,222
59th percentile

Mean Commute Time Trend

Rankings →

Elections

In the 2024 presidential election, Clark County voted Republican with a margin of 69.1%. The vote was 15% Dem / 84.1% Rep. Compared to 2020, the margin shifted +2.6 toward Democrats .

2024 REP +69.1%
15% 84.1%
Dem 333 votes Rep
2020 REP +71.7%
13.2% 84.9%
Dem 311 votes Rep
2016 REP +56.2%
15.5% 71.7%
Dem 283 votes Rep
2012 REP +51.5%
20.1% 71.6%
Dem 328 votes Rep
2008 REP +64.2%
17.1% 81.3%
Dem 375 votes Rep

Vote Share Over Time

About Clark County, Idaho

Clark County, Idaho has a total population of 849, making it the 3,193rd most populous county in the United States. The median age in Clark County is 31.1 years, which is 20.1% below the national median of 38.9 years.

The median household income in Clark County is $55,208, which ranks #2,465 of 3,222 counties nationwide. This is 26.5% below the national median of $75,149. The poverty rate is 11.7%, lower than the national rate of 12.6%. The unemployment rate stands at 2.1%.

The median home value in Clark County is $216,900, 23.1% below the national median. Renters in Clark County pay a median gross rent of $773 per month. The homeownership rate is 61.3%, compared to the national rate of 64.4%.

In Clark County, 20.5% of residents aged 25 and older hold a bachelor's degree or higher, 39.2% below the national average of 33.7%. Health insurance coverage stands at 82.9% of the population. The average commute time for workers is 27.7 min.

Clark County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 63.1% of the population, followed by Hispanic or Latino (28.7%) and Other (non-Hispanic) (6.9%).

All data for Clark County, Idaho comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.