Clark County, Washington Demographics 2026

Population Overview

Clark County is located in Washington with a total population of 510,516. It is the 5th most populous county out of 39 in Washington.

Age Demographics

The median age in Clark County is 38.9 years. This is 2% higher than the state median of 38.2 years.

Economy, Income & Housing

The median household income in Clark County is $94,948. This is about average than the state median of $94,952. Compared to the national median of $78,538, household income here is 21% higher. The poverty rate stands at 8.4%. This is 15% lower than the state poverty rate of 9.9%. The unemployment rate is 5.2%. This is 4% higher than the state rate of 5.0%. The median home value is $487,900. Housing costs are 6% lower than the state median of $519,800. The home-value-to-income ratio is 5.1x. 66.2% of occupied housing units are owner-occupied. This homeownership rate is 4% higher than the state average of 63.9%.

Race & Ethnicity

The largest racial or ethnic group in Clark County is White (non-Hispanic), making up 73.6% of the population. Hispanic or Latino residents account for 12.0%.

Education

33.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 15% lower than the state rate of 38.8%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 92.8%.