Highest Population (2012) In Iowa By County

Rank County Population (2012)
1 Polk County, Iowa 443,710
2 Linn County, Iowa 215,295
3 Scott County, Iowa 168,799
4 Johnson County, Iowa 136,317
5 Black Hawk County, Iowa 131,820
6 Woodbury County, Iowa 102,323
7 Dubuque County, Iowa 95,097
8 Pottawattamie County, Iowa 92,913
9 Story County, Iowa 91,140
10 Dallas County, Iowa 71,967
11 Clinton County, Iowa 48,717
12 Warren County, Iowa 46,891
13 Cerro Gordo County, Iowa 43,788
14 Muscatine County, Iowa 42,879
15 Marshall County, Iowa 40,857
16 Des Moines County, Iowa 40,340
17 Webster County, Iowa 37,273
18 Jasper County, Iowa 36,602
19 Lee County, Iowa 35,617
20 Wapello County, Iowa 35,366
21 Sioux County, Iowa 34,268
22 Marion County, Iowa 33,419
23 Boone County, Iowa 26,195
24 Benton County, Iowa 25,827
25 Plymouth County, Iowa 24,907
26 Bremer County, Iowa 24,479
27 Mahaska County, Iowa 22,443
28 Washington County, Iowa 21,914
29 Winneshiek County, Iowa 21,061
30 Buchanan County, Iowa 20,942
31 Fayette County, Iowa 20,793
32 Jones County, Iowa 20,639
33 Carroll County, Iowa 20,631
34 Buena Vista County, Iowa 20,592
35 Henry County, Iowa 20,236
36 Jackson County, Iowa 19,712
37 Poweshiek County, Iowa 18,736
38 Cedar County, Iowa 18,416
39 Clayton County, Iowa 17,835
40 Delaware County, Iowa 17,574
41 Tama County, Iowa 17,536
42 Crawford County, Iowa 17,309
43 Hardin County, Iowa 17,302
44 Dickinson County, Iowa 16,972
45 Jefferson County, Iowa 16,867
46 Clay County, Iowa 16,599
47 Iowa County, Iowa 16,189
48 Floyd County, Iowa 16,056
49 Page County, Iowa 15,713
50 Madison County, Iowa 15,654
51 Kossuth County, Iowa 15,346
52 Hamilton County, Iowa 15,344
53 Butler County, Iowa 14,986
54 Mills County, Iowa 14,837
55 Harrison County, Iowa 14,548
56 Allamakee County, Iowa 14,237
57 OBrien County, Iowa 14,172
58 Cass County, Iowa 13,723
59 Wright County, Iowa 12,991
60 Appanoose County, Iowa 12,700
61 Union County, Iowa 12,594
62 Grundy County, Iowa 12,448
63 Chickasaw County, Iowa 12,276
64 Shelby County, Iowa 12,069
65 Cherokee County, Iowa 11,946
66 Lyon County, Iowa 11,757
67 Louisa County, Iowa 11,278
68 Hancock County, Iowa 11,134
69 Guthrie County, Iowa 10,777
70 Mitchell County, Iowa 10,725
71 Winnebago County, Iowa 10,600
72 Montgomery County, Iowa 10,566
73 Franklin County, Iowa 10,554
74 Keokuk County, Iowa 10,374
75 Sac County, Iowa 10,153
76 Emmet County, Iowa 10,120
77 Calhoun County, Iowa 9,909
78 Humboldt County, Iowa 9,729
79 Howard County, Iowa 9,563
80 Clarke County, Iowa 9,370
81 Palo Alto County, Iowa 9,275
82 Greene County, Iowa 9,153
83 Monona County, Iowa 9,124
84 Lucas County, Iowa 8,760
85 Davis County, Iowa 8,689
86 Decatur County, Iowa 8,253
87 Monroe County, Iowa 8,063
88 Worth County, Iowa 7,519
89 Adair County, Iowa 7,481
90 Van Buren County, Iowa 7,449
91 Pocahontas County, Iowa 7,150
92 Fremont County, Iowa 7,147
93 Ida County, Iowa 7,108
94 Wayne County, Iowa 6,344
95 Taylor County, Iowa 6,208
96 Osceola County, Iowa 6,193
97 Audubon County, Iowa 5,910
98 Ringgold County, Iowa 5,096
99 Adams County, Iowa 3,911

Population (2012) By

City Congressional District County School District

Business Lists

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Education Lists

Highest Percentage with College Degree Highest Percentage with High School Diploma

Housing Lists

Most Households Highest Home Ownership Percentage Highest Percentage of Residents Living In Multi-Unit Buildings Highest Median Home Value Highest Average People Per Household Most Housing Units

Income Lists

Highest Income Per Capita Highest Income Per Household Highest People Below The Poverty Rate

People Lists

Highest Percentage of Minors Highest Percentage of Seniors Highest Percentage of Young Children Highest Percentage of Female Residents Highest Percentage of Foreign Born Residents

Race Lists

Highest Percentage of American Indian or Alaska Native Residents Highest Percentage of Asian Residents Highest Percentage of Black or African American Residents Highest Percentage of Hispanic or Latino Residents Highest Percentage of Native Hawaiian/Pacific Islander Residents Highest Percentage of Residents With Two or More Races Highest Percentage of White Residents Highest Percentage White, Not Hispanic or Latino, Residents

Size Lists

Highest Land Area Highest Population (2012) Highest Population Density

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