Post Office - Hadley 1133 Fredonia Rd Hadley, PA 16130 Phone : (724) 253-2888 Post Office - Hadley Business Category Post Offices Toll-Free           (800) ASK-USPS United States Government--u S Postal Service, Hadley Ofc Hadley, PA 16130 Phone : (724) 253-2888 United States Government--u S Postal Service, Hadley Ofc Business Category Government Offices-Federal Post Offices Government Offices & Public Schools