Washington Population By County in 2015

Based on the US Census Vintage data estimates, in 2015, the population of Washington was 7,167,287. Among all Washington counties, King[object Promise] had the highest population (2,127,372), followed by Pierce[object Promise] (844,317), and Snohomish[object Promise] (770,022). Garfield[object Promise] was the least populated county (2,223).

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.