Other pages about the topic: Washington trends

Families by household type

Percent of Families by Household Type


Population by age, mapped by county

Median Age, 2020

In 2010, the median age of persons living in Washington state was 37.3 years. In 2020 the median age had increased to 38.5 years.

Jefferson County had the highest median age in 2010 at 53.9 years. By 2020, the median age in Jefferson County had reached 59.5 years.

Hispanic population as a percent of total population


In 2020, the highest percentages of Hispanic residents were found in central Washington with Adams (69.2%), Franklin (55.9%), and Yakima (51.9%) counties posting the highest shares.

Components of population change


2010 Population  6,724,540
Plus Births     956,500
Less Deaths    -600,557
Plus Net Migration     686,492

Population by race

Washington state population by race