Millerstown is an unincorporated community in eastern Johnson Township, Champaign County, Ohio, United States. It lies at the intersection of Heck Hill, Ward, and Zimmerman Roads, NaNmiles north of U.S. Route 36. Nettle Creek, a tributary of the Mad River, flows past Millerstown. It is located approximately 4 miles (6½ km) northeast of the city of St. Paris and 10miles west-northwest of the city of Urbana, the county seat of Champaign County.[1]
Millerstown was platted in 1837.[2] The community was named for early landowner Casper Miller.[3] A post office was established at Millerstown in 1838, and remained in operation until 1903.[4]