Land for sale in Sioux County recently totaled $22 million and around 1,000 acres. Sioux County ranks 49th in the state for the total acreage of land currently advertised for sale. There were two properties listed as sold in Sioux County through the Land Network Comparable Sales Program. This represented a total value of $1,860,000. Of all farms, ranches, and rural real estate for sale in Sioux County, Sioux Center had the most land for sale. Sioux County is one of the ten largest counties in Iowa (768 square miles). It's located in the Western Iowa region of Iowa.