Passport Application Services - Boulder City 1101 Colorado St Boulder City, NV 89005 Phone : (702) 293-2740 Business Category Passport Application Services Toll-Free           (800) ASK-USPS Fax           (702) 293-3419 Post Office - Boulder City 1101 Colorado St Boulder City, NV 89005 Phone : (702) 293-2740 Business Category Post Offices Toll-Free           (800) ASK-USPS Fax           (702) 293-3419