Ranking of Washington Counties By Net Migration Rate per 1K in 2021

Updated on June 21, 2025.

Based on the US Census Vintage data estimates, in 2021, the Net Migration Rate per 1K for Washington was -0.22. Among all Washington counties, San Juan County had the highest net migration rate (49.06), followed by Wahkiakum County (39.41), and Pend Oreille County (37.22).

The chart below shows the top 10 counties, and the table below shows the ranking of all Washington counties.

You can see similar ranking information for related topics, and for other states. You can also see the ranking of all counties in the United States.

See this for other years:
Ranking of Washington Counties By Net Migration Rate per 1K in 2021
San Juan
Wahkiakum
Pend Oreille
Lincoln
Pacific
Garfield
Lewis
Columbia
Jefferson
Stevens
Ranking of Washington Counties By Net Migration Rate per 1K in 2021
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Rank County Net Migration Rate
1 San Juan County 49.06
2 Wahkiakum County 39.41
3 Pend Oreille County 37.22
4 Lincoln County 36.38
5 Pacific County 31.08
6 Garfield County 28.42
7 Lewis County 27.15
8 Columbia County 25.34
9 Jefferson County 25.01
10 Stevens County 24.75
11 Clallam County 22
12 Mason County 21.46
13 Klickitat County 18.96
14 Ferry County 17.95
15 Grays Harbor County 17.81
16 Okanogan County 16.23
17 Douglas County 15.93
18 Skamania County 15.58
19 Clark County 12.14
20 Benton County 11.85
21 Asotin County 9.95
22 Skagit County 8.67
23 Island County 8
24 Cowlitz County 7.69
25 Spokane County 7.05
26 Chelan County 6.52
27 Thurston County 5.59
28 Grant County 4.15
29 Snohomish County 2.94
30 Kitsap County 1.44
31 Pierce County 0.03
32 Franklin County -0.25
33 Whatcom County -3.44
34 Yakima County -4.23
35 Walla Walla County -5.51
36 Adams County -8.63
37 King County -12.67
38 Kittitas County -23.31
39 Whitman County -91.83