Washington county-to-county migration
39 Washington counties. Top 10 origin and destination counties for each. Census ACS 2020 5-yr migration flows.
Frozen vintage. The Census Bureau has not released a newer county-to-county migration flows file. The 2020 5-yr vintage (covering 2016-2020) is the latest available as of build date.
Counties (by population)
- King County pop. 2,262,713
- Pierce County pop. 924,106
- Snohomish County pop. 834,648
- Spokane County pop. 544,323
- Clark County pop. 510,516
- Thurston County pop. 296,640
- Kitsap County pop. 276,581
- Yakima County pop. 256,605
- Whatcom County pop. 228,432
- Benton County pop. 210,224
- Skagit County pop. 130,407
- Cowlitz County pop. 111,539
- Grant County pop. 100,428
- Franklin County pop. 97,676
- Island County pop. 86,747
- Lewis County pop. 83,925
- Chelan County pop. 79,518
- Clallam County pop. 77,593
- Grays Harbor County pop. 76,397
- Mason County pop. 66,968
- Walla Walla County pop. 62,102
- Stevens County pop. 47,470
- Whitman County pop. 47,042
- Kittitas County pop. 44,736
- Douglas County pop. 43,733
- Okanogan County pop. 42,811
- Jefferson County pop. 33,313
- Pacific County pop. 23,750
- Klickitat County pop. 23,082
- Asotin County pop. 22,424
- Adams County pop. 20,690
- San Juan County pop. 18,266
- Pend Oreille County pop. 13,811
- Skamania County pop. 12,276
- Lincoln County pop. 11,271
- Ferry County pop. 7,326
- Wahkiakum County pop. 4,573
- Columbia County pop. 3,996
- Garfield County pop. 2,326
Source: U.S. Census Bureau, ACS County-to-County Migration Flows, 2020 5-yr (covering 2016-2020).