King William County, Virginia Demographics 2026

Population Overview

King William County is located in Virginia with a total population of 18,232. It is the 83rd most populous county out of 133 in Virginia.

Age Demographics

The median age in King William County is 40.5 years. This is 4% higher than the state median of 38.8 years.

Economy, Income & Housing

The median household income in King William County is $85,212. This is 6% lower than the state median of $90,974. Compared to the national median of $78,538, household income here is 8% higher. The poverty rate stands at 7.9%. This is 20% lower than the state poverty rate of 9.9%. The unemployment rate is 3.5%. This is 18% lower than the state rate of 4.3%. The median home value is $276,500. Housing costs are 23% lower than the state median of $360,700. The home-value-to-income ratio is 3.2x. 88.8% of occupied housing units are owner-occupied. This homeownership rate is 32% higher than the state average of 67.2%.

Race & Ethnicity

The largest racial or ethnic group in King William County is White (non-Hispanic), making up 77.0% of the population. Black or African American residents account for 15.3%. The Hispanic or Latino population (3.1%) is well below the state average of 10.7%. The Asian population (0.7%) is well below the state average of 6.8%.

Education

24.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 42% lower than the state rate of 41.5%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 93.6%.