Counties in Washington by GDP per capita (US dollars)
King County had the highest GDP per capita (US dollars) of 39 counties in 2018, at $136,056. Wahkiakum County had the lowest, at $20,716. The median was $45,771 and the figure for Washington was $75,551. Source: BEA.
All counties, 2018
Full ranking
Other periods
About this ranking
Gross domestic product at current prices in US dollars divided by the resident population.
United States, states and counties: Invokely calculation, BEA current-dollar GDP divided by the BEA mid-year population of the same year and place; both inputs are shown with each value. GDP is counted where production happens and population where people live, so places with many commuters or capital-intensive industries, such as the District of Columbia or oil counties, show very high values. Not the same as per_capita_personal_income. For Spain and the EU use gdp_per_capita (EUR) or gdp_per_capita_pps. Other countries and the World: World Bank, converted at official annual average exchange rates (market rates, not purchasing power parity, so it understates living standards in lower-price countries). For euros use gdp_per_capita.
Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.
How to cite
Invokely calculation from GDP in current dollars (BEA SAGDP2 and CAGDP1) divided by mid-year population (BEA SAINC1 and CAINC1). https://invokely.ai/docs/methodology#gdp_per_capita_usd. Retrieved 2026-10-09.Use this data in your AI agent
Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:
Rank Counties in Washington by GDP per capita (US dollars) using official data, and cite the source.
rank_places {"indicator":"gdp_per_capita_usd","level":"province","within":"Washington","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=gdp_per_capita_usd&level=province&within=Washington&limit=10Questions
Which county has the highest GDP per capita (US dollars)?
King County, with $136,056 in 2018, according to BEA.
Which county has the lowest GDP per capita (US dollars)?
Wahkiakum County, with $20,716 in 2018.
Where does this ranking come from?
Every value comes from one source and one period, so the places are comparable: Invokely, GDP in current dollars (BEA SAGDP2 and CAGDP1) divided by mid-year population (BEA SAINC1 and CAINC1). Retrieved 2026-10-09.
GDP per capita, US dollars: other rankings
- Countries
- EU countries
- US states
- US counties
- Counties in Texas
- Counties in Georgia
- Counties in Kentucky
- Counties in Missouri
- Counties in Kansas
- Counties in Illinois
- Counties in North Carolina
- Counties in Iowa
Counties in Washington: more rankings
- Asian population share
- Bachelor's degree or higher, population 25 and over
- Live births, July to June
- Black or African American population share
- Crude birth rate, July to June
- Crude death rate, July to June
- Deaths, July to June
- Foreign-born population share
- Real GDP growth
- Gross domestic product (GDP), US dollars
- Hispanic or Latino population share
- Homeownership rate (US, housing units)
- Median age
- Median gross rent (monthly)
- Median home value
- Median household income