Mt Holly Springs Admin 200 Harmon St Mount Holly Springs, PA 17065 Phone : (717) 486-7613 Business Category Government Offices-City Village & Twp Legislative Bodies Mt Holly Springs Borough 200 Harmon St Mount Holly Springs, PA 17065 Phone : (717) 486-7613 Business Category Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools