There was a total of around $64 million of farms and ranches for sale in Knox County recently on Land.com. The total of all Knox County farms, ranches, hunting land and other land for sale was 2,000 acres. Knox County ranks 27th in Ohio for the total number of acres of land currently advertised for sale. Among cities in Knox County with farms, ranches, hunting land and other land for sale, Mount Vernon had the most land for sale. From an economic perspective, manufacturing and related services are the main sectors in Knox County. Knox County is Ohio's 27th biggest county (529 square miles). It's located in the Central Ohio region of Ohio.