Clark County, Idaho Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 44th-largest in Idaho
The population of Clark County, Idaho is 776 as of the 2023 American Community Survey, making it the 44th-largest county in Idaho. The median household income is $52,083, the median home value is $203,000, and the median age is 33.4.
The population of Clark County has declined 19.1% since 2010 (981 → 794), a -1.50% annualized rate.
776
Population
-1.50%
Annual growth
0
People / sq mi
$52,083
Median Income
$203,000
Median Home Value
Clark County covers 1,763 sq mi of land at 0.4 people per square mile.
About Clark County, ID
Clark County is a county in Idaho with a population of 776. It ranks #44 among counties in Idaho by population. The median age is 33.4, younger than the national median. The population is 53.2% male and 46.8% female.
The median household income in Clark County is $52,083, below the US median of $74,580. 9.1% of residents live below the federal poverty level. Home values sit at a median of $203,000, with monthly rent averaging $771. The homeownership rate of 63.9% is close to the national rate of 64.8%.
Educational attainment in Clark County reflects 17.3% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 9.6% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 26.7 minutes each way.
Clark County Population History (2010-2024)
The county of Clark County had a population of 981 in 2010 and 794 in 2024, a -19.1% growth over 14 years. The peak was 981 in 2010. Average annual growth rate: -1.47%.
794
Population (2024)
981
Population (2010)
981
Peak (2010)
-1.47%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 981 |
| 2011 | 955 |
| 2012 | 885 |
| 2013 | 879 |
| 2014 | 889 |
| 2015 | 885 |
| 2016 | 867 |
| 2017 | 878 |
| 2018 | 845 |
| 2019 | 838 |
| 2020 | 793 |
| 2021 | 794 |
| 2022 | 812 |
| 2023 | 801 |
| 2024 | 794 |
Race & Ethnicity
| White | 67.1% |
| Black or African American | 0.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.5% |
| Two or More Races | 0.0% |
Age & Sex
33.4
Median Age
46.8%
Female
53.2%
Male
13.1%
Age 65+
Age Distribution
Children (under 15): 24.6% · Seniors (65+): 13.1%
Income & Poverty
| Median household income | $52,083$-22,553 vs state |
| Mean household income | $58,492 |
| Per-capita income | $22,917 |
| Poverty rate | 9.1%+2.1% vs state |
| Unemployment rate | 1.2% |
| Employment-to-population | 62.0% |
Top Industries by Employment
The largest employment sector in Clark County is agriculture, accounting for 27.3% of workers.
How residents commute
0.0%
Drive alone
2.5%
Carpool
55.3%
Public transit
9.6%
Work from home
26.7 min
Avg commute
Housing
$203,000$-173,000 vs state
Median home value
$771
Median rent
63.9%
Homeownership rate
442
Total housing units
57.0%
Occupied
43.0%
Vacant
36.1%
Renter-occupied
Social & access
82.6%
With health insurance
89.7%
With broadband internet
24.0%
Foreign-born
1.8%
Veterans (18+)
15.2%
With a disability
71.3%
Speak language other than English at home
Education
75.7%
High School+
17.3%
Bachelor's+
Largest cities in Idaho
Other counties in Idaho
Part of Idaho
Metro areas in Idaho
County rankings
Frequently Asked Questions
Clark County, Idaho has a population of 776 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 44th-largest county in Idaho. Population density is 0 people per square mile.
The population of Clark County has declined 19.1% since 2010 (981 → 794), a -1.50% annualized rate.
The median household income in Clark County, Idaho is $52,083, with mean (average) household income of $58,492 and per-capita income of $22,917. 9.1% of residents live below the federal poverty level.
In Clark County, the largest racial and ethnic groups are White (67.1%), Hispanic or Latino (0.5%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Clark County, Idaho is 33.4 years. Residents are 46.8% female and 53.2% male.
The median home value in Clark County is $203,000 and median monthly rent is $771. 63.9% of occupied housing units are owner-occupied. The county has 442 total housing units, 43.0% of which are vacant.
The largest employment sector in Clark County, Idaho is agriculture, forestry, fishing, and mining, employing 27.3% of workers. The unemployment rate is 1.2%.
Boise City is among the largest cities associated with Clark County, Idaho, with a population of 235,701.
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Statewide data for Idaho
Population, race, income, age, and trends across Idaho
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.