Ranking of Idaho 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 Idaho was 28.06. Among all Idaho counties, Boise County had the highest net migration rate (67.11), followed by Lewis County (54.9), and Bonner County (50.24).

The chart below shows the top 10 counties, and the table below shows the ranking of all Idaho 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 Idaho Counties By Net Migration Rate per 1K in 2021
Boise
Lewis
Bonner
Adams
Camas
Custer
Kootenai
Teton
Canyon
Benewah
Ranking of Idaho Counties By Net Migration Rate per 1K in 2021
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Rank County Net Migration Rate
1 Boise County 67.11
2 Lewis County 54.9
3 Bonner County 50.24
4 Adams County 50.19
5 Camas County 48.63
6 Custer County 46.14
7 Kootenai County 43.51
8 Teton County 42.32
9 Canyon County 42.04
10 Benewah County 41.48
11 Boundary County 41.18
12 Shoshone County 40.48
13 Washington County 39.04
14 Valley County 37.51
15 Idaho County 35.37
16 Lemhi County 34.87
17 Gem County 33.41
18 Butte County 30.49
19 Payette County 30.48
20 Owyhee County 30.38
21 Jefferson County 30.37
22 Bear Lake County 29.99
23 Ada County 28.3
24 Clearwater County 27.15
25 Lincoln County 27.05
26 Bonneville County 21.63
27 Twin Falls County 21.32
28 Franklin County 20.1
29 Blaine County 16.57
30 Latah County 15.04
31 Cassia County 13.52
32 Jerome County 13.51
33 Bingham County 13.34
34 Caribou County 13.16
35 Fremont County 12.14
36 Bannock County 11.89
37 Nez Perce County 11.53
38 Minidoka County 9.99
39 Power County 9.33
40 Oneida County 7.64
41 Gooding County 7.56
42 Madison County 4.99
43 Elmore County 2.57
44 Clark County -2.52