Swatara State Park is a 3,515-acre Pennsylvania state park in Bethel, Swatara and Union Townships, Lebanon County and Pine Grove Township, Schuylkill County in Pennsylvania in the United States. 8 miles of Swatara Creek lie within the park's boundaries, which are roughly formed by Pennsylvania Route 443 to the north and Interstate 81 to t…Swatara State Park is a 3,515-acre Pennsylvania state park in Bethel, Swatara and Union Townships, Lebanon County and Pine Grove Township, Schuylkill County in Pennsylvania in the United States. 8 miles of Swatara Creek lie within the park's boundaries, which are roughly formed by Pennsylvania Route 443 to the north and Interstate 81 to the south. The park is in a valley in the ridge and valley region of Pennsylvania between Second Mountain and Blue Mountain.