National Register of Historic Places listings in Polk County, Iowa

This is a list of the National Register of Historic Places listings in Polk County, Iowa.

This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Polk County, Iowa, United States. Latitude and longitude coordinates are provided for many National Register properties and districts; these locations may be seen together in an online map.

There are 186 properties and districts listed on the National Register in the county, including 2 National Historic Landmarks. Two properties were once listed but have since been removed.