Land for sale in Warren County, Indiana, recently totaled nearly $13 million and 1,000 acres. Warren County ranks 82nd out of 92 counties in the Hospitality State for the combined amount of land currently advertised for sale. Among cities in Warren County with farms, rural land, hunting land and other land for sale, Williamsport featured the most land for sale. Warren County has a large agricultural economy, with 413 farms recorded in the county during the latest U.S. Census. Farming activities in Warren County generate annual revenues of $9 million, most of which is from crops. Warren County is the 67th biggest county (366 square miles) in Indiana. It's located in the West Indiana region of the state.