Land for sale in Pennsylvania's Mifflin County recently totaled $7 million and almost 1,000 acres. Mifflin County ranks 65th in the Independence State for the combined amount of land currently advertised for sale. Of all locations in Mifflin County with farms, hunting land and other rural land and acreage for sale, Lewistown featured the most land for sale. From an economic perspective, manufacturing and related services are the main sectors in Mifflin County. Mifflin County is the 54th largest county (414 square miles) in Pennsylvania. It's located in the Alleghenies & Valleys Pennsylvania region of Pennsylvania.