This is a list of the National Register of Historic Places listings in Hardin County, Iowa. This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Hardin County, Iowa, United States. Latitude and longitude coordinates are provided for many National Register properties and districts; these locations may be seen together in a map. There are 35 properties and districts listed on the National Register in the county. Current listings |} See also List of National Historic Landmarks in Iowa National Register of Historic Places listings in Iowa Listings in neighboring counties: Butler, Franklin, Grundy, Hamilton, Marshall, Story References Hardin Buildings and structures in Hardin County, Iowa