Other pages about the topic: Washington trends

Languages spoken at home (mapped by county)

Percent in households where English is spoken less than "very well"

Population Age 5 and Above, 2018

The smallest share of population where English was spoken less than "Very Well" was in Pend Oreille and Lincoln County. The highest share was in Adams County where 29.0% of persons were in this category.

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Educational attainment (mapped by county)

Percent high school graduates

Population Age 25 and Above, 2018

Garfield (97.7%), San Juan (95.9%) and Island (95.3%) County had the highest percentages of high school graduates.

Adams (64.6%), Yakima (73.1%) and Franklin (74.8%) County had the lowest percentages of high school graduates.

Hispanic population as a percent of total population

2019

In 2019, the highest percentages of Hispanic residents were found in central Washington with Adams (68.5%), Franklin (55.3%) and Yakima (51.4%) counties posting the highest shares.

Population by age, mapped by county

Median Age, 2019

In 2010, the median age of persons living in Washington state was 37.3 years. In 2019 the median age had increased to 38.3 years.

Jefferson County had the highest median age in 2010 at 53.9 years. By 2019, the median age in Jefferson County had reached 58.9 years.

Population by race

Washington state population by race

2020

Components of population change

2010–2020

  Population
2010 Population 6,724,540
Plus Births    874,518
Less Deaths    536,191
Plus Net Migration    593,333

Single-parent families as a percent of all families with children (mapped by county)

2018

Okanogan County had the highest percentage of single parent families with 43.1%.

Wahiakum County had the lowest share of single parent families, with 17.1%.

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