Washington County, Kansas Demographics 2026

Population Overview

Washington County is located in Kansas with a total population of 5,519. It is the 62nd most populous county out of 105 in Kansas. The county encompasses 1 Census-designated place.

Age Demographics

The median age in Washington County is 43.9 years. This is 18% higher than the state median of 37.2 years. 10.9% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Washington County is $62,452. This is 14% lower than the state median of $72,639. Compared to the national median of $78,538, household income here is 20% lower. The poverty rate stands at 8.1%. This is 30% lower than the state poverty rate of 11.5%. The unemployment rate is 1.5%. This is 61% lower than the state rate of 3.9%. The median home value is $106,100. Housing costs are 48% lower than the state median of $203,400. With a home-value-to-income ratio of just 1.7x, Washington County is one of the most affordable housing markets in the area. 78.1% of occupied housing units are owner-occupied. This homeownership rate is 17% higher than the state average of 66.9%.

Race & Ethnicity

Washington County has a predominantly White (non-Hispanic) population, comprising 91.4% of all residents. Hispanic or Latino residents account for 4.7%. The Black or African American population (0.2%) is well below the state average of 5.3%. The Hispanic or Latino population (4.7%) is well below the state average of 13.3%. The Asian population (0.6%) is well below the state average of 2.9%.

Education

23.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 34% lower than the state rate of 35.2%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 94.5%.