A total of nearly 3,000 acres were listed for sale in Osborne County recently; the combined value of all Osborne County farms and ranches for sale was $9 million. Osborne County ranks 86th in the state for the total number of acres of land currently advertised for sale. Natoma featured the most land for sale. Agriculture and farming drives the Osborne County economy, with 343 farms recorded in the county during the U.S. Census in 2012. Farming activities in Osborne County generate annual revenues of $8 million, most of which is from crops. Osborne County is the 35th largest county (894 square miles) in Kansas. It's located in the Tallgrass Prairie Kansas region of the state.