Washington Population By County in 2024

Updated on June 16, 2025.

Based on the US Census Vintage data estimates, in 2024, the population of Washington was 7,958,180. Among all Washington counties, King had the highest population (2,340,211), followed by Pierce (941,170), and Snohomish (864,113). Garfield was the least populated county (2,404).

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.

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Washington Population By County in 2024
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County Population % of State Population
Adams 21039 0.26
Asotin 22523 0.28
Benton 218190 2.74
Chelan 81228 1.02
Clallam 77958 0.98
Clark 527269 6.63
Columbia 4025 0.05
Cowlitz 113982 1.43
Douglas 45795 0.57
Ferry 7543 0.10
Franklin 101238 1.27
Garfield 2404 0.03
Grant 104717 1.32
Grays Harbor 77893 0.98
Island 86478 1.09
Jefferson 33944 0.43
King 2340211 29.41
Kitsap 281420 3.54
Kittitas 48172 0.61
Klickitat 24124 0.30
Lewis 87049 1.09
Lincoln 11862 0.15
Mason 69632 0.88
Okanogan 44942 0.56
Pacific 24245 0.31
Pend Oreille 14332 0.18
Pierce 941170 11.83
San Juan 18668 0.24
Skagit 132736 1.67
Skamania 12660 0.16
Snohomish 864113 10.86
Spokane 555947 6.99
Stevens 49015 0.62
Thurston 302912 3.81
Wahkiakum 4800 0.06
Walla Walla 62068 0.78
Whatcom 234954 2.95
Whitman 48399 0.61
Yakima 258523 3.25