Washington Population By County in 2020

Based on the US Census Vintage data estimates, in 2020, the population of Washington was 7,724,031. Among all Washington counties, King[object Promise] had the highest population (2,274,094), followed by Pierce[object Promise] (923,524), and Snohomish[object Promise] (829,869). Garfield[object Promise] was the least populated county (2,298).

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.