The overall value of ranches, farms, hunting land and other rural land and acreage for sale in Winnebago County recently on Land.com was $5 million. This represents almost 1,000 acres of land for sale in Winnebago County. Winnebago County ranks 93rd in the Wrestling State for the total acreage of land currently advertised for sale. Among cities in Winnebago County with farms, ranches, and rural real estate for sale, Thompson had the most land for sale. Winnebago County is the 98th largest county (401 square miles) in Iowa. It's located in the Central Iowa region of the state.