Other pages about the topic: County data

Languages spoken at home (mapped by county)

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

Population Age 5 and Above, 2016

The smallest share of population where English was spoken less than "Very Well" was in Asotin and Lincoln counties. The highest share was in Adams County where 28.6 percent of persons were in this category.

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Educational attainment (mapped by county)

Percent high school graduates

Population Age 25 and Above, 2016

 

Garfield (96.4 percent), Whitman (95.8 percent) and San Juan (95.3 percent) Counties had the highest percentages of high school graduates.

Adams (66.1 percent), Yakima (72.5 percent) and Franklin (73.6 percent) County had the lowest percentages of high school graduates.

Population by county — census data (map)

Population, 2010

 

Population, 2000

Population Change, 2000–2010

Population by age, mapped by county

Median Age, 2010

In 2010, the median age of persons living in Washington state was 37.3 years. In 2017 the median age had increased to 38.2 years.

Jefferson County had the highest median age in 2010 at 53.9 years. By 2017, the median age in Jefferson County had reached 57.9 years.

Hispanic population as a percent of total population

2017

In 2017, the highest percentages of Hispanic residents were found in central Washington with Adams (56.8 percent), Franklin (54.9 percent) and Yakima (49.9 percent) counties posting the highest shares.

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

2016

Ferry County had the highest percentage of single parent families with 41.5 percent.

Garfield County had the lowest share of single parent families, with 17.3 percent.

Poverty rate for single-parent families headed by a female householder (mapped by county)

2016

Klickitat County had the highest percentage of single mother families in poverty at 55.0 percent.

The lowest poverty rates for families headed by single mothers was found in Wahkiakum County at 8.4 percent.

Median household income estimates

Median Household Income Estimates by County: 1989 to 2017 and Projection for 2018

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