Grelton, Ohio
Grelton is an unincorporated community on the borders of Monroe and Richfield Townships in Henry County, Ohio, United States. Although it is unincorporated, it has a post office, with the ZIP code of 43523. It is located on County Road 7 approximately two miles south of U.S. Route 6.
Coordinates: 41°20′30″N 83°59′59″W / 41.34167°N 83.99972°W
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