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 PlacesinUnion 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.[1]
There are 10 properties and districts listed on the National Register in the county.
^The latitude and longitude information provided in this table was derived originally from the National Register Information System, which has been found to be fairly accurate for about 99% of listings. Some locations in this table may have been corrected to current GPS standards.
^Numbers represent an alphabetical ordering by significant words. Various colorings, defined here, differentiate National Historic Landmarks and historic districts from other NRHP buildings, structures, sites or objects.
^The eight-digit number below each date is the number assigned to each location in the National Register Information System database, which can be viewed by clicking the number.
^Owen, Lorrie K., ed. Dictionary of Ohio Historic Places. Vol. 12 St. Clair Shores: Somerset, 1999, 1362.
