Cynthiana is a census-designated place in northwestern Perry Township, Pike County, Ohio, United States. Cynthiana no longer has a post office and the mailing address has been changed to Bainbridge, OH 45612.
In Cynthiana, a census-designated place situated in northwestern Perry Township, Pike County, Ohio, United States, the post office no longer operates, and mail should be addressed to Bainbridge, OH 45612.