Clark County, Idaho Demographics 2026

Population Overview

Clark County is located in Idaho with a total population of 776. It is the 44th most populous county out of 44 in Idaho.

Age Demographics

The median age in Clark County is 33.4 years. This is 10% lower than the state median of 37.1 years. With 28.9% of the population under 18, Clark County has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Clark County is $52,083. This is 30% lower than the state median of $74,636. Compared to the national median of $78,538, household income here is 34% lower. The poverty rate stands at 12.7%. This is 19% higher than the state poverty rate of 10.6%. The unemployment rate is 1.9%. This is 48% lower than the state rate of 3.7%. The median home value is $203,000. Housing costs are 46% lower than the state median of $376,000. The home-value-to-income ratio is 3.9x. 63.9% of occupied housing units are owner-occupied. This homeownership rate is 12% lower than the state average of 72.4%.

Race & Ethnicity

The largest racial or ethnic group in Clark County is White (non-Hispanic), making up 59.3% of the population. Hispanic or Latino residents account for 30.7%. The Hispanic or Latino population is significantly higher than the state average (30.7% vs 13.3%).

Education

17.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 45% lower than the state rate of 31.2%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 75.7%.