Land for sale in Columbia County recently totaled approximately $68 million and almost 1,000 acres. Columbia County ranks 35th out of 72 counties in the Cheese State for the total number of acres of land currently advertised for sale. There were two properties listed as sold in Columbia County through the Land Network Comparable Sales Program. This represented a total value of $2,690,000. Portage had the most land for sale. From an economic perspective, manufacturing and related services are the main sectors in Columbia County. Columbia County is Wisconsin's 41st biggest county (795 square miles). It's located in the Southwest Wisconsin region of Wisconsin.