Passport Application Services - Denver 3593 Denver Dr Denver, NC 28037 Phone : (704) 489-6590 Business Category Passport Application Services Toll-Free           (800) ASK-USPS Fax           (704) 424-2424 Post Office - Denver 3593 Denver Dr Denver, NC 28037 Phone : (704) 489-6590 Business Category Post Offices Toll-Free           (800) ASK-USPS Fax           (704) 424-2424