Phillips 66 2240 N 3rd St, Saint Charles, MO63301 In 1915, Frank and L.E. Phillips founded The Phillips Petroleum Company. Since then, the company has grown into Phillips…More 66, a popular chain of gas stations and convenience stores. At this location on North 3rd Street, customers can get in and out quickly by paying either inside or outside. The gas station features an on-site car wash and a convenience store selling everything motorists need for daily commutes and road trips alike. Visit the Phillips 66 website for more information about the gas station chain.