A total of nearly 1,000 acres were listed for sale in Pennsylvania's Union County recently, representing a total value of nearly $15 million in Union County farms and rural land for sale. Union County ranks 59th in the Keystone State for the total acreage of land currently advertised for sale. Among cities in Union County with farms, hunting land and other rural land and acreage for sale, Lewisburg featured the most land for sale. From an economic perspective, government and state-level services contribute most to Union County's overall GDP. Union County is Pennsylvania's 64th largest county (317 square miles). It's located in the Alleghenies & Valleys Pennsylvania region of Pennsylvania.