United States Government--interior Department 16 E 3rd St Marbleton, WY 83113 Phone : (307) 276-4611 Business Category Government Offices & Public Schools Post Office - Marbleton 16 E 3rd St Marbleton, WY 83113 Phone : (307) 276-4611 Business Category Post Offices Toll-Free           (800) ASK-USPS