A combined approximately 2,000 acres were listed for sale in Pennsylvania's Armstrong County recently; the combined value of all Armstrong County farms and rural land for sale was nearly $13 million. Armstrong County ranks 56th out of 67 counties in the state for the combined amount of land currently advertised for sale. Of all locations in Armstrong County with farms and rural land for sale, Vandergrift featured the most land for sale. Mining and mineral extraction-related services are the main economic drivers in this part of Pennsylvania. Armstrong County is the 34th largest county (663 square miles) in Pennsylvania. It's located in the Pittsburgh & Countryside Pennsylvania region of the state.