Passport Application Services - Hanover 50 S Main St Hanover, NH 03755 Phone : (603) 643-5201 Business Category Passport Application Services Toll-Free           (800) ASK-USPS Fax           (603) 643-6324 Post Office - Hanover 50 S Main St Hanover, NH 03755 Phone : (603) 643-5201 Post Office - Hanover Business Category Post Offices Toll-Free           (800) ASK-USPS Fax           (603) 643-6324