Plainville, Ohio
Plainville is a census-designated place in Hamilton County, Ohio, United States. The population was 87 at the 2010 census, with 100% being Caucasian and 89.7% being over the age of 18.Geography
Plainville is located at in a valley on the banks of the Little Miami River, opposite Newtown and adjacent to Mariemont and Indian Hill. Plainville is part of the Greater Cincinnati area and the Mariemont City School District. Many of the residences and structures are from the 19th century, and the old Plainville School which was built in 1910 and closed in 1957 still stands on Walton Creek Road and now serves as the home theater for the Mariemont Players theater troupe.
According to the United States Census Bureau, the CDP has a total area of, all land.
