Land for sale in Clarion County recently totaled almost $28 million and almost 100,000 acres. Based on the combined acreage of land and rural property for sale here, Clarion County has the most land for sale of the 67 counties in the Independence State. Among cities in Clarion County with farms, hunting land and other rural land and acreage for sale, Clarion had the most land for sale. Clarion County is the 38th largest county (609 square miles) in Pennsylvania. It's located in the Great Lakes & Wilds Pennsylvania region of the state.