Iowa counties and county equivalents

These are current canonical geography records. Historical boundaries and election reporting units can differ; consult each area's caveats.

• Adair County

  FIPS 19001

• Adams County

  FIPS 19003

• Allamakee County

  FIPS 19005

• Appanoose County

  FIPS 19007

• Audubon County

  FIPS 19009

• Benton County

  FIPS 19011

• Black Hawk County

  FIPS 19013

• Boone County

  FIPS 19015

• Bremer County

  FIPS 19017

• Buchanan County

  FIPS 19019

• Buena Vista County

  FIPS 19021

• Butler County

  FIPS 19023

• Calhoun County

  FIPS 19025

• Carroll County

  FIPS 19027

• Cass County

  FIPS 19029

• Cedar County

  FIPS 19031

• Cerro Gordo County

  FIPS 19033

• Cherokee County

  FIPS 19035

• Chickasaw County

  FIPS 19037

• Clarke County

  FIPS 19039

• Clay County

  FIPS 19041

• Clayton County

  FIPS 19043

• Clinton County

  FIPS 19045

• Crawford County

  FIPS 19047

• Dallas County

  FIPS 19049

• Davis County

  FIPS 19051

• Decatur County

  FIPS 19053

• Delaware County

  FIPS 19055

• Des Moines County

  FIPS 19057

• Dickinson County

  FIPS 19059

• Dubuque County

  FIPS 19061

• Emmet County

  FIPS 19063

• Fayette County

  FIPS 19065

• Floyd County

  FIPS 19067

• Franklin County

  FIPS 19069

• Fremont County

  FIPS 19071

• Greene County

  FIPS 19073

• Grundy County

  FIPS 19075

• Guthrie County

  FIPS 19077

• Hamilton County

  FIPS 19079

• Hancock County

  FIPS 19081

• Hardin County

  FIPS 19083

• Harrison County

  FIPS 19085

• Henry County

  FIPS 19087

• Howard County

  FIPS 19089

• Humboldt County

  FIPS 19091

• Ida County

  FIPS 19093

• Iowa County

  FIPS 19095

• Jackson County

  FIPS 19097

• Jasper County

  FIPS 19099

• Jefferson County

  FIPS 19101

• Johnson County

  FIPS 19103

• Jones County

  FIPS 19105

• Keokuk County

  FIPS 19107

• Kossuth County

  FIPS 19109

• Lee County

  FIPS 19111

• Linn County

  FIPS 19113

• Louisa County

  FIPS 19115

• Lucas County

  FIPS 19117

• Lyon County

  FIPS 19119

• Madison County

  FIPS 19121

• Mahaska County

  FIPS 19123

• Marion County

  FIPS 19125

• Marshall County

  FIPS 19127

• Mills County

  FIPS 19129

• Mitchell County

  FIPS 19131

• Monona County

  FIPS 19133

• Monroe County

  FIPS 19135

• Montgomery County

  FIPS 19137

• Muscatine County

  FIPS 19139

• O'Brien County

  FIPS 19141

• Osceola County

  FIPS 19143

• Page County

  FIPS 19145

• Palo Alto County

  FIPS 19147

• Plymouth County

  FIPS 19149

• Pocahontas County

  FIPS 19151

• Polk County

  FIPS 19153

• Pottawattamie County

  FIPS 19155

• Poweshiek County

  FIPS 19157

• Ringgold County

  FIPS 19159

• Sac County

  FIPS 19161

• Scott County

  FIPS 19163

• Shelby County

  FIPS 19165

• Sioux County

  FIPS 19167

• Story County

  FIPS 19169

• Tama County

  FIPS 19171

• Taylor County

  FIPS 19173

• Union County

  FIPS 19175

• Van Buren County

  FIPS 19177

• Wapello County

  FIPS 19179

• Warren County

  FIPS 19181

• Washington County

  FIPS 19183

• Wayne County

  FIPS 19185

• Webster County

  FIPS 19187

• Winnebago County

  FIPS 19189

• Winneshiek County

  FIPS 19191

• Woodbury County

  FIPS 19193

• Worth County

  FIPS 19195

• Wright County

  FIPS 19197