Land for sale in Clinton County recently totaled $12 million and almost 1,000 acres. Clinton County ranks 59th in the Independence State for the total acreage of land currently advertised for sale. Of all locations in Clinton County with farms, rural land, hunting land and other land for sale, Lock Haven featured the most land for sale. From an economic perspective, manufacturing and related services are the main sectors in Clinton County. Clinton County is the 17th largest county (896 square miles) in Pennsylvania. It's located in the Great Lakes & Wilds Pennsylvania region of the state.