Population of Counties in Washington (2017)

Name 2017 Population Growth Rate
King County2,149,97010.95%
Pierce County861,3128.28%
Snohomish County787,62010.08%
Spokane County499,0725.70%
Clark County467,0189.42%
Thurston County275,2228.76%
Kitsap County264,8115.19%
Yakima County249,6362.17%
Whatcom County216,8007.55%
Benton County193,6869.73%
Skagit County123,6815.70%
Cowlitz County105,1602.68%
Grant County93,5464.37%
Franklin County90,16013.93%
Island County82,6364.99%
Lewis County77,0662.05%
Chelan County76,3384.93%
Clallam County74,5704.25%
Grays Harbor County71,628-1.69%
Mason County62,1982.39%
Walla Walla County60,3402.40%
Whitman County48,8519.04%
Kittitas County44,8669.40%
Stevens County44,4392.20%
Okanogan County41,5540.76%
Douglas County41,3277.20%
Jefferson County31,1394.14%
Asotin County22,3062.75%
Klickitat County21,3014.48%
Pacific County21,2491.75%
Adams County19,2382.28%
San Juan County16,3393.61%
Pend Oreille County13,1231.23%
Skamania County11,5103.66%
Lincoln County10,350-2.08%
Ferry County7,6140.81%
Wahkiakum County4,1394.20%
Columbia County3,938-4.07%
Garfield County2,247-0.79%