1 Ameristar BlvdSt Charles, MO 63301 Phone: +1 636-949-7777Fax: +1 636-940-4812Toll Free: +800-GAMBLER Hotel Website Commission Rooms Rates 10% 400 - Hoteliers! Is your information accurate? Update Here Ameristar Casino Resort Spa St Charles Location & Neighborhood Historical City 20 miles from St. Louis - 7 MI from St Louis/Lambert airport. 20 MI from St. LouisNearest Cross Street: Main StreetHotel Location: Beach