Ranking of Iowa Counties By Population in 2013

Updated on January 28, 2024.

Based on the US Census Vintage data estimates, in 2013, the Population for Iowa was 3.09M. Among all Iowa counties, Polk County had the highest population (452.78K), followed by Linn County (216.57K), and Scott County (170.32K).

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 Population in 2013
Polk
Linn
Scott
Johnson
Black Hawk
Woodbury
Dubuque
Story
Pottawattamie
Dallas
Ranking of Iowa Counties By Population in 2013
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Rank County Population
1 Polk County 452780
2 Linn County 216567
3 Scott County 170321
4 Johnson County 140266
5 Black Hawk County 132966
6 Woodbury County 102317
7 Dubuque County 95990
8 Story County 93938
9 Pottawattamie County 92923
10 Dallas County 74968
11 Clinton County 48297
12 Warren County 47369
13 Cerro Gordo County 43537
14 Muscatine County 43018
15 Marshall County 40993
16 Des Moines County 40421
17 Webster County 37344
18 Jasper County 36739
19 Wapello County 35506
20 Lee County 35250
21 Sioux County 34511
22 Marion County 33019
23 Boone County 26294
24 Benton County 25698
25 Plymouth County 24937
26 Bremer County 24585
27 Mahaska County 22432
28 Washington County 21954
29 Buchanan County 21028
30 Winneshiek County 20849
31 Buena Vista County 20649
32 Carroll County 20539
33 Jones County 20522
34 Fayette County 20516
35 Henry County 20029
36 Jackson County 19516
37 Poweshiek County 18618
38 Cedar County 18229
39 Clayton County 17793
40 Jefferson County 17632
41 Delaware County 17475
42 Tama County 17432
43 Hardin County 17390
44 Crawford County 17351
45 Dickinson County 16883
46 Clay County 16440
47 Iowa County 16286
48 Floyd County 16029
49 Page County 15521
50 Madison County 15482
51 Hamilton County 15347
52 Kossuth County 15325
53 Butler County 14973
54 Mills County 14907
55 Harrison County 14359
56 Allamakee County 14074
57 O'Brien County 14046
58 Cass County 13569
59 Wright County 12982
60 Appanoose County 12659
61 Union County 12615
62 Grundy County 12340
63 Chickasaw County 12273
64 Shelby County 11905
65 Cherokee County 11876
66 Lyon County 11700
67 Louisa County 11353
68 Hancock County 11134
69 Guthrie County 10675
70 Mitchell County 10663
71 Franklin County 10507
72 Winnebago County 10440
73 Montgomery County 10407
74 Keokuk County 10336
75 Sac County 10028
76 Calhoun County 9899
77 Emmet County 9886
78 Humboldt County 9682
79 Howard County 9443
80 Clarke County 9244
81 Palo Alto County 9163
82 Greene County 9158
83 Monona County 9030
84 Davis County 8767
85 Lucas County 8695
86 Decatur County 8223
87 Monroe County 7974
88 Worth County 7488
89 Van Buren County 7434
90 Adair County 7385
91 Pocahontas County 7112
92 Ida County 7075
93 Fremont County 7068
94 Wayne County 6384
95 Osceola County 6236
96 Taylor County 6227
97 Audubon County 5859
98 Ringgold County 4971
99 Adams County 3890