Rainsville is a small unincorporated community in Pine Township, Warren County, in the U.S. state of Indiana. History Rainsville was platted on April 16, 1833, by Isaac Rains, who had built a mill here the previous year; the town was named for him. A post office was established on February 5, 1836, and closed on September 15, 1904. Geography Rainsville is located southwest of Pine Village and east of U.S. Route 41. Big Pine Creek flows from Pine Village, around the north side of the town, and continues to the southwest. Demographics References Gallery Unincorporated communities in Indiana Unincorporated communities in Warren County, Indiana Populated places established in 1833 1833 establishments in Indiana