Jefferson County is in Great Lakes & Wilds Pennsylvania. Of the 67 counties in the Keystone State, 656-square-mile Jefferson County ranks 35th by size. A recent survey of Land Network data records around 1,000 acres of residential land and property for sale in Pennsylvania's Jefferson County, which is valued at a combined $8 million. The average price of residential acreage for sale in Jefferson County was $440,522. Browse all residential land and rural property for sale in Pennsylvania to find residential land and properties that suit your lifestyle needs, from existing residential homes and estates to land ready for future residential-property development.