The value of all farms and ranches for sale in Obrien County, Iowa, recently was around $14 million, representing a combined 669 acres of land for sale in Obrien County. Obrien County ranks 51st out of 99 counties in the state for the total acreage of land currently advertised for sale. Among cities in Obrien County with ranches, farms, hunting land and other rural land and acreage for sale, Sheldon featured the most land for sale. Agriculture and farming drives the Obrien County economy, with 884 farms recorded in the county during the U.S. Census in 2012. Farming activities in Obrien County generate annual revenues of $14 million, the majority of which comes from livestock products. Obrien County is Iowa's 46th largest county (573 square miles). It's located in the Western Iowa region of the state.