Washington Population By County in 2018

Based on the US Census Vintage data estimates, in 2018, the population of Washington was 7,526,793. Among all Washington counties, King[object Promise] had the highest population (2,228,488), followed by Pierce[object Promise] (894,951), and Snohomish[object Promise] (814,107). Garfield[object Promise] was the least populated county (2,257).

Hover over or click on the counties in the map below to see the populations. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.

You can see similar information for other states and by state for the United States.