National Register of Historic Places listings in Johnson County, Iowa

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

This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Johnson 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 89 properties and districts listed on the National Register in the county, including 1 National Historic Landmark. Another 2 properties were formerly listed but have been removed.

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