Directions Directions to Oktoberfest The Saint Charles Oktoberfest is located in historic downtown Saint Charles in beautiful Frontier Park located off 500 S. Riverside Drive, between the Missouri River and the Historic Downtown District. Oktoberfest Festival Map Frontier Park 500 S Riverside Dr, St Charles, MO 63301 Countdown To Oktoberfest Day(s) : Hour(s) : Minute(s) : Second(s) Follow us! FollowFollowFollowFollow