Jefferson County is in Great Lakes & Wilds Pennsylvania. Of the 67 counties in the Keystone State, Jefferson County is 35th in terms of its size (656 square miles). Jefferson County, Pennsylvania, includes around 1,000 acres of residential land for sale based on recent Land Network data. The combined market value of farms, rural land, hunting land and other land for sale here was around $15 million. The average price of residential acreage for sale in Jefferson County was $480,679. 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.