This is a list of the National Register of Historic Places listings in Linn County, Iowa. This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Linn 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 121 properties and districts listed on the National Register in the county. Five other sites that were once listed have been removed. Current listings |} Former listings |} See also List of National Historic Landmarks in Iowa National Register of Historic Places listings in Iowa Listings in neighboring counties: Benton, Buchanan, Cedar, Delaware, Iowa, Johnson, Jones References Linn Buildings and structures in Linn County, Iowa