Post Office - Kleinfeltersville 101 E Main St Kleinfeltersville, PA 17039 Phone : (717) 949-3919 Business Category Post Offices Toll-Free           (800) ASK-USPS U S Government--postal Service, Kleinfeltersville Ofc Kleinfeltersville, PA 17039 Phone : (717) 949-3919 Business Category Government Offices-Federal Government Offices & Public Schools