Passport Application Services - Dunkirk 410 Central Ave Dunkirk, NY 14048 Phone : (716) 366-1780 Business Category Passport Application Services Toll-Free           (800) ASK-USPS Post Office - Dunkirk 410 Central Ave Dunkirk, NY 14048 Phone : (716) 366-1780 Business Category Post Offices Toll-Free           (800) ASK-USPS