| County Name |
# of Members |
|
Adair County
Adair County
|
1,538 |
|
Adams County
Adams County
|
486 |
|
Allamakee County
Allamakee County
|
3,059 |
|
Appanoose County
Appanoose County
|
7,100 |
|
Audubon County
Audubon County
|
953 |
|
Benton County
Benton County
|
14,450 |
|
Black Hawk County
Black Hawk County
|
114,018 |
|
Boone County
Boone County
|
7,788 |
|
Bremer County
Bremer County
|
17,121 |
|
Buchanan County
Buchanan County
|
14,450 |
|
Buena Vista County
Buena Vista County
|
3,615 |
|
Butler County
Butler County
|
8,256 |
|
Calhoun County
Calhoun County
|
1,609 |
|
Carroll County
Carroll County
|
5,167 |
|
Cass County
Cass County
|
3,810 |
|
Cedar County
Cedar County
|
8,624 |
|
Cerro Gordo County
Cerro Gordo County
|
20,212 |
|
Cherokee County
Cherokee County
|
4,711 |
|
Chickasaw County
Chickasaw County
|
3,357 |
|
Clarke County
Clarke County
|
3,205 |
|
Clay County
Clay County
|
1,356 |
|
Clayton County
Clayton County
|
5,701 |
|
Clinton County
Clinton County
|
20,432 |
|
Crawford County
Crawford County
|
4,212 |
|
Dallas County
Dallas County
|
45,788 |
|
Davis County
Davis County
|
3,437 |
|
Decatur County
Decatur County
|
1,410 |
|
Delaware County
Delaware County
|
8,780 |
|
Des Moines County
Des Moines County
|
6,002 |
|
Dickinson County
Dickinson County
|
2,236 |
|
Dubuque County
Dubuque County
|
76,222 |
|
Emmet County
Emmet County
|
1,029 |
|
Fayette County
Fayette County
|
9,304 |
|
Floyd County
Floyd County
|
3,683 |
|
Franklin County
Franklin County
|
2,174 |
|
Fremont County
Fremont County
|
1,532 |
|
Greene County
Greene County
|
1,888 |
|
Grundy County
Grundy County
|
6,586 |
|
Guthrie County
Guthrie County
|
3,368 |
|
Hamilton County
Hamilton County
|
2,728 |
|
Hancock County
Hancock County
|
2,159 |
|
Hardin County
Hardin County
|
3,383 |
|
Harrison County
Harrison County
|
3,620 |
|
Henry County
Henry County
|
4,698 |
|
Howard County
Howard County
|
1,349 |
|
Humboldt County
Humboldt County
|
2,132 |
|
Ida County
Ida County
|
2,314 |
|
Iowa County
Iowa County
|
7,023 |
|
Jackson County
Jackson County
|
8,559 |
|
Jasper County
Jasper County
|
15,658 |
|
Jefferson County
Jefferson County
|
5,778 |
|
Johnson County
Johnson County
|
76,511 |
|
Jones County
Jones County
|
10,411 |
|
Keokuk County
Keokuk County
|
3,259 |
|
Kossuth County
Kossuth County
|
2,562 |
|
Lee County
Lee County
|
4,781 |
|
Linn County
Linn County
|
163,925 |
|
Louisa County
Louisa County
|
3,428 |
|
Lucas County
Lucas County
|
3,923 |
|
Lyon County
Lyon County
|
679 |
|
Madison County
Madison County
|
5,552 |
|
Mahaska County
Mahaska County
|
9,069 |
|
Marion County
Marion County
|
10,923 |
|
Marshall County
Marshall County
|
13,063 |
|
Mills County
Mills County
|
4,282 |
|
Mitchell County
Mitchell County
|
1,603 |
|
Monona County
Monona County
|
1,125 |
|
Monroe County
Monroe County
|
4,040 |
|
Montgomery County
Montgomery County
|
1,482 |
|
Muscatine County
Muscatine County
|
22,444 |
|
O'Brien County
O'Brien County
|
1,286 |
|
Osceola County
Osceola County
|
540 |
|
Page County
Page County
|
2,083 |
|
Palo Alto County
Palo Alto County
|
869 |
|
Plymouth County
Plymouth County
|
3,008 |
|
Pocahontas County
Pocahontas County
|
989 |
|
Polk County
Polk County
|
263,804 |
|
Pottawattamie County
Pottawattamie County
|
36,662 |
|
Poweshiek County
Poweshiek County
|
8,301 |
|
Ringgold County
Ringgold County
|
703 |
|
Sac County
Sac County
|
1,568 |
|
Scott County
Scott County
|
121,910 |
|
Shelby County
Shelby County
|
1,664 |
|
Sioux County
Sioux County
|
1,867 |
|
Story County
Story County
|
28,026 |
|
Tama County
Tama County
|
6,754 |
|
Taylor County
Taylor County
|
697 |
|
Union County
Union County
|
2,212 |
|
Van Buren County
Van Buren County
|
1,679 |
|
Wapello County
Wapello County
|
22,243 |
|
Warren County
Warren County
|
24,616 |
|
Washington County
Washington County
|
8,279 |
|
Wayne County
Wayne County
|
1,992 |
|
Webster County
Webster County
|
11,275 |
|
Winnebago County
Winnebago County
|
1,607 |
|
Winneshiek County
Winneshiek County
|
3,849 |
|
Woodbury County
Woodbury County
|
22,236 |
|
Worth County
Worth County
|
2,112 |
|
Wright County
Wright County
|
2,117 |
|
1,436,080 |