The value of all farms, ranches, and rural real estate for sale in Sumner County, Kansas, recently was almost $12 million, representing a combined 1,556 acres of land for sale in Sumner County. Sumner County ranks 30th out of 105 counties in the Sunflower State for the total number of acres of land currently advertised for sale. There were three properties listed as sold in Sumner County through the Land Network Comparable Sales Program. This represented a total value of $542,000. Among cities in Sumner County with land for sale, Wellington featured the most land for sale. Sumner County is one of the ten biggest counties in Kansas (1,184 square miles). It's located in the Tallgrass Prairie Kansas region of the state.