Passport Application Services - Manassas Park 2049 Old Centreville Rd Manassas Park, VA 20111 Phone : (703) 368-3645 Business Category Passport Application Services Toll-Free           (800) ASK-USPS Post Office - Manassas Park 2049 Old Centreville Rd Manassas Park, VA 20111 Phone : (703) 368-3645 Business Category Post Offices Toll-Free           (800) ASK-USPS