St. Charles kan være:
Byer i USA St. Charles (Arkansas), i Arkansas County St. Charles (Idaho), i Bear Lake County St. Charles (Illinois), i Kane und i DuPage County St. Charles (Iowa), i Madison County St. Charles (Kentucky), i Hopkins County St. Charles Parish, Louisiana St. Charles (Maryland), i Charles County St. Charles (Michigan), i Saginaw County St. Charles (Minnesota), i Winona County Saint Charles (Missouri), i St. Charles County St. Charles (Sør-Dakota), i Gregory County St. Charles (Virginia), i Lee County