National Register of Historic Places listings in Union County, Ohio

This is a list of the National Register of Historic Places listings in Union County, Ohio.

It is intended to be a complete list of the properties and districts on the National Register of Historic Places in Union County, Ohio, United States. The locations of National Register properties and districts for which the latitude and longitude coordinates are included below, may be seen in an online map.

There are 10 properties and districts listed on the National Register in the county.

Current listings

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