The value of all land for sale in Wisconsin's Ozaukee County recently was approximately $51 million, representing a combined 171 acres of land for sale in Ozaukee County. Ozaukee County ranks 47th in the state for the combined amount of land currently advertised for sale. Among cities in Ozaukee County with farms and rural real estate for sale, Grafton had the most land for sale. Manufacturing and related services are the largest economic sectors in Ozaukee County. Ozaukee County is Wisconsin's 17th largest county (1,116 square miles). It's located in the Southeast Wisconsin region of Wisconsin.