Passport Application Services - New Wilmington 143 W Neshannock Ave New Wilmington, PA 16142 Phone : (724) 946-2581 Business Category Passport Application Services Toll-Free           (800) ASK-USPS Post Office - New Wilmington 143 W Neshannock Ave New Wilmington, PA 16142 Phone : (724) 946-2581 Business Category Post Offices Toll-Free           (800) ASK-USPS