Clark County's 2026 population is estimated at 780, reflecting a -0.89% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Clark County is the 44th largest county in Idaho. The 2010 population was 981 and has grown -20.49% since 2010.
Data after 2023 is projected based on recent change
Overall: 31.1 years
Female: 32.9 years
Male: 29.3 years
There are 607 adults, (103 of whom are seniors) in Clark County.
Female: 395 (46.5%)
Male: 454 (53.5%)
The racial composition of Clark County includes 70.44% White, 22.61% other race, and smaller percentages for Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 598 | 70.44% |
| Other race | 192 | 22.61% |
| Two or more races | 58 | 6.83% |
| Native American | 1 | 0.12% |
Clark County 's average per capita income is $32,500. Household income levels show a median of $55,208. The poverty rate stands at 11.74%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $67,250 | - |
| Families | $66,250 | $72,313 |
| Households | $55,208 | $62,016 |
| Non Families | $31,806 | $44,699 |
Average Income
Median Household Income
Poverty Rate
