United States Government Continued--post Offices, Neffs 5613 Route 873 Neffs, PA 18065 Phone : (610) 767-7230 Business Category Government Offices-Federal Post Offices Government Offices & Public Schools Post Office - Neffs 5613 Route 873 Neffs, PA 18065 Phone : (610) 767-7230 Post Office - Neffs Business Category Post Offices Toll-Free           (800) ASK-USPS U S Government Of--us Postal Service, Lehigh Valley, Neffs 5613 Route 873 Neffs, PA 18065 Phone : (610) 767-7230 U S Government Of--us Postal Service, Lehigh Valley, Neffs Business Category Government Offices-Federal Government Offices & Public Schools