Ranking of Iowa Counties By Net Migration Rate per 1K in 2012

Updated on June 18, 2025.

Based on the US Census Vintage data estimates, in 2012, the Net Migration Rate per 1K for Iowa was -0.1. Among all Iowa counties, Dallas County had the highest net migration rate (24.53), followed by Johnson County (13.76), and Jefferson County (10.3).

The chart below shows the top 10 counties, and the table below shows the ranking of all Iowa 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 Iowa Counties By Net Migration Rate per 1K in 2012
Dallas
Johnson
Jefferson
Scott
Polk
Union
Buena Vista
Story
Dickinson
Des Moines
Ranking of Iowa Counties By Net Migration Rate per 1K in 2012
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Rank County Net Migration Rate
1 Dallas County 24.53
2 Johnson County 13.76
3 Jefferson County 10.3
4 Scott County 5.63
5 Polk County 5.53
6 Union County 4.77
7 Buena Vista County 4.75
8 Story County 4.69
9 Dickinson County 4.44
10 Des Moines County 4.31
11 Shelby County 3.5
12 Lyon County 3.33
13 Clarke County 2.68
14 Dubuque County 2.58
15 Mitchell County 2.52
16 Monroe County 2.48
17 Wayne County 2.37
18 Warren County 2.33
19 Bremer County 2.29
20 Washington County 2.24
21 Ida County 2.13
22 Kossuth County 1.69
23 Hardin County 1.61
24 Linn County 1.07
25 Butler County 0.67
25 Sioux County 0.67
26 Lee County 0.08
27 Marion County -0.03
28 Ringgold County -0.2
29 Floyd County -0.25
30 Winneshiek County -0.28
31 Plymouth County -0.36
32 Buchanan County -0.52
33 Jackson County -0.66
34 Decatur County -0.85
35 Howard County -0.94
36 Cass County -0.95
37 Keokuk County -0.96
38 Muscatine County -1.1
39 Black Hawk County -1.23
40 Wapello County -1.61
41 Wright County -1.69
42 Marshall County -1.78
43 O'Brien County -1.9
44 Crawford County -2.32
45 Clay County -2.47
46 Cherokee County -3
47 Jasper County -3.28
48 Sac County -3.43
49 Cedar County -3.93
50 Grundy County -4.25
51 Palo Alto County -4.29
52 Humboldt County -4.31
53 Mahaska County -4.85
54 Clayton County -5.34
54 Delaware County -5.34
55 Louisa County -5.36
56 Allamakee County -5.71
57 Cerro Gordo County -5.75
58 Jones County -6.05
59 Poweshiek County -6.11
60 Boone County -6.26
61 Montgomery County -6.71
62 Adair County -7.33
63 Worth County -7.44
64 Hancock County -8.01
65 Tama County -8.03
66 Taylor County -8.28
67 Winnebago County -8.35
68 Pocahontas County -8.36
69 Lucas County -8.5
70 Fayette County -8.53
71 Van Buren County -8.69
72 Guthrie County -9.06
73 Clinton County -9.1
74 Madison County -9.24
75 Monona County -9.49
76 Pottawattamie County -9.74
77 Hamilton County -9.81
78 Woodbury County -10.01
79 Page County -10.06
80 Mills County -10.23
81 Webster County -10.36
82 Iowa County -10.4
83 Appanoose County -11.34
84 Carroll County -11.56
85 Chickasaw County -11.74
86 Greene County -11.88
87 Benton County -12.1
88 Emmet County -13.17
89 Henry County -13.36
90 Davis County -13.73
91 Calhoun County -14.62
92 Audubon County -16.69
92 Franklin County -16.69
93 Harrison County -18.26
94 Osceola County -19.33
95 Adams County -21.76
96 Fremont County -28.81