The following counties in Iowa have historic locations on the National Register of Historic places. Please select a county in Iowa to see the different historic places in the county.

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