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Iowa (IA) post codes

County

Adair County 5 Adams County 4 Allamakee County 7 Appanoose County 9 Audubon County 6 Benton County 15 Black Hawk County 13 Boone County 9 Bremer County 8 Buchanan County 11 Buena Vista County 9 Butler County 12 Calhoun County 10 Carroll County 12 Cass County 8 Cedar County 8 Cerro Gordo County 11 Cherokee County 8 Chickasaw County 7 Clarke County 3 Clay County 9 Clayton County 15 Clinton County 18 Crawford County 12 Dallas County 15 Davis County 4 Decatur County 8 Delaware County 10 Des Moines County 7 Dickinson County 7 Dubuque County 18 Emmet County 5 Fayette County 14 Floyd County 7 Franklin County 9 Fremont County 9 Greene County 8 Grundy County 9 Guthrie County 9 Hamilton County 9 Hancock County 8 Hardin County 13 Harrison County 10 Henry County 10 Howard County 6 Humboldt County 11 Ida County 5 Iowa County 13 Jackson County 12 Jasper County 12 Jefferson County 6 Johnson County 14 Jones County 10 Keokuk County 15 Kossuth County 12 Lee County 11 Linn County 31 Louisa County 7 Lucas County 5 Lyon County 8 Madison County 8 Mahaska County 9 Marion County 12 Marshall County 13 Mills County 8 Mitchell County 8 Monona County 9 Monroe County 3 Montgomery County 6 Muscatine County 10 O'Brien County 8 Osceola County 5 Page County 11 Palo Alto County 8 Plymouth County 9 Pocahontas County 8 Polk County 78 Pottawattamie County 19 Poweshiek County 8 Ringgold County 7 Sac County 8 Scott County 22 Shelby County 9 Sioux County 13 Story County 18 Tama County 13 Taylor County 7 Union County 7 Van Buren County 10 Wapello County 7 Warren County 13 Washington County 8 Wayne County 8 Webster County 14 Winnebago County 7 Winneshiek County 8 Woodbury County 24 Worth County 7 Wright County 9

FAQ

How many codes does Iowa have?

1,055 unique codes.