Andersonville, OhioAndersonville is a census-designated place in Ross County, in the U.S. state of Ohio. The population of the CDP was 778 at the 2020 census.HistoryAndersonville was originally called Lewisville, and under the latter name was laid out in 1851 by Mahlon Anderson. A post office called Andersonville was established in 1873, and remained in operation until 1901. The community was a port town on the Ohio and Erie Canal.