Iowa Outline Iowa Demographics by Cubit

Iowa Counties by Population

Iowa Counties by Population

The data is from the US Census. Below are 99 Iowa counties ranked 1 through 99. You can copy and paste this list directly into your favorite spreadsheet program. Don't you just adore lovely numbers listed nicely in columns & rows? We do!

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Rank County Population
1 Polk County 474,045
2 Linn County 221,661
3 Scott County 172,474
4 Johnson County 146,547
5 Black Hawk County 132,904
6 Woodbury County 102,779
7 Story County 97,090
8 Dubuque County 97,003
9 Pottawattamie County 93,582
10 Dallas County 84,516
11 Warren County 49,691
12 Clinton County 47,309
13 Cerro Gordo County 43,070
14 Muscatine County 42,940
15 Marshall County 40,312
16 Des Moines County 39,739
17 Webster County 36,769
18 Jasper County 36,708
19 Wapello County 34,982
20 Sioux County 34,898
21 Lee County 34,615
22 Marion County 33,189
23 Boone County 26,532
24 Benton County 25,699
25 Plymouth County 25,200
26 Bremer County 24,798
27 Washington County 22,281
28 Mahaska County 22,181
29 Buchanan County 20,992
30 Winneshiek County 20,561
31 Jones County 20,439
32 Carroll County 20,437
33 Buena Vista County 20,332
34 Fayette County 20,054
35 Henry County 19,773
36 Jackson County 19,472
37 Poweshiek County 18,533
38 Cedar County 18,454
39 Jefferson County 18,090
40 Clayton County 17,590
41 Delaware County 17,327
42 Tama County 17,319
43 Dickinson County 17,243
44 Hardin County 17,226
45 Crawford County 16,940
46 Clay County 16,333
47 Iowa County 16,311
48 Floyd County 15,873
49 Madison County 15,848
50 Page County 15,391
51 Kossuth County 15,114
52 Hamilton County 15,076
53 Mills County 14,972
54 Butler County 14,791
55 Harrison County 14,149
56 O'Brien County 14,020
57 Allamakee County 13,884
58 Cass County 13,157
59 Wright County 12,779
60 Appanoose County 12,462
61 Union County 12,420
62 Grundy County 12,313
63 Chickasaw County 12,023
64 Shelby County 11,800
65 Lyon County 11,754
66 Cherokee County 11,508
67 Louisa County 11,142
68 Hancock County 10,835
69 Mitchell County 10,763
70 Winnebago County 10,631
71 Guthrie County 10,625
72 Montgomery County 10,225
73 Franklin County 10,170
74 Keokuk County 10,119
75 Sac County 9,876
76 Calhoun County 9,846
77 Emmet County 9,658
78 Humboldt County 9,487
79 Howard County 9,332
80 Clarke County 9,309
81 Palo Alto County 9,047
82 Greene County 9,011
83 Monona County 8,898
84 Davis County 8,860
85 Lucas County 8,647
86 Decatur County 8,141
87 Monroe County 7,870
88 Worth County 7,572
89 Van Buren County 7,271
90 Adair County 7,092
91 Ida County 6,985
92 Fremont County 6,950
93 Pocahontas County 6,886
94 Wayne County 6,452
95 Taylor County 6,216
96 Osceola County 6,064
97 Audubon County 5,678
98 Ringgold County 5,068
99 Adams County 3,693

United States Census Bureau / American FactFinder. "Annual Estimates of the Resident Population: April 1, 2010 to July 1, 2016". 2016 Population Estimates Program. Web. March 2017. http://factfinder2.census.gov.

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