List of CITGO Stores in Upper Marlboro, MD Outlet Note Regular Brands CITGO Maryland Upper Marlboro Rating 4.5 based on 53 votes Products Convenience Stores Gas Stations Natural Gas & Petroleum NameAddressPhone Name/Address/Phone CITGO outlet - Upper Marlboro 8405 Westphalia Rd (301) 568-2260 CITGO outlet - Upper Marlboro 7538 Crain Hwy (301) 627-1811 People Also Viewed