Prole is an unincorporated community in northwestern Warren County, Iowa, United States. It lies along Iowa Highway 28 northwest of the city of Indianola, the county seat of Warren County. Its elevation is 978 feet (298 m), and it is located at 41°24′33″N 93°43′38″W / 41.40917°N 93.72722°W / 41.40917; -93.72722 (41.4091580, -93.7271648). Although Prole is unincorporated, it has a post office, with the ZIP code of 50229, which opened on 25 September 1884.