Old Fort is a census-designated place located in northern Pleasant Township, Seneca County, Ohio, United States; located about a mile east of Ohio State Route 53 where N. Township Rd. 73 intersects with E. County Rd.
Old Fort is a designated location within Pleasant Township, Seneca County, Ohio, United States, situated near Ohio State Route 53 and intersecting with N. Township Rd. 73 and E. County Rd.