A total of approximately 1,000 acres were listed for sale in Winnebago County recently, representing a total value of around $8 million in Winnebago County land for sale. Winnebago County ranks 80th in the Hawkeye State for the total number of acres of land currently advertised for sale. Among cities in Winnebago County with farms, ranches, hunting land and other land for sale, Lake Mills featured the most land for sale. Winnebago County is Iowa's 98th biggest county (401 square miles). It's located in the Central Iowa region of the state.