Median Age, 2022

In 2010, the median age of persons living in Washington state was 37.3 years. In 2022 the median age had increased to 38.6 years.

Jefferson County had the highest median age in 2010 at 53.9 years. By 2022, the median age in Jefferson County had reached 60.7 years.

Population, 2010

Population, 2000

Population Change, 2000–2010

Washington state population by age group

Census 2010

Estimate of population with limited English proficiency for the state and counties

At the request of a cross-agency working group headed by the Governor's Interagency Council on Health Disparities, OFM has produced these estimates at both the state and county level.

An asterisk (*) denotes that the race/ethnic group does not meet the minimum population threshold of 100 persons at the state level.

The most common tables are highlighted in bold.

State economic, demographic, and social trends are related to one another and, in turn, affect government policies on spending and taxation. A strong economy, for example, attracts more people to the state, which in turn boosts state tax collections. At the same time, however, increases in population also put additional pressure on such areas of state responsibility as public schools, prisons, and social services. Social developments, such as crime rates and the incidence of teenage pregnancies, also contribute to demands on public resources.