Land for sale in Kewaunee County recently totaled approximately $9 million and around 1,000 acres. Kewaunee County ranks 69th in the Badger State for the combined amount of land currently advertised for sale. Of all farms, hunting land and other rural land and acreage for sale in Kewaunee County, Algoma had the most land for sale. Manufacturing and related services are the largest economic sectors in Kewaunee County. Kewaunee County is Wisconsin's 18th biggest county (1,084 square miles). It's located in the Northeast Wisconsin region of the state.