Land for sale in Decatur County, Kansas, recently totaled almost $33 million and around 5,000 acres. Decatur County ranks 78th out of 105 counties in the state for the combined amount of land currently advertised for sale. Among cities in Decatur County with farms and ranches for sale, Oberlin had the most land for sale. Its economy is defined as agricultural, with 293 farms recorded in the county during the most recent U.S. Census. Farming activities in Decatur County generate annual revenues of $12 million, the majority of which comes from livestock products. Decatur County is Kansas's 36th largest county (894 square miles). It's located in the High Plains Kansas region of the state.