Saint Charles is a city in, and the county seat of, St. Charles County, Missouri, United States. The population was 65,794 at the 2010 census, making St. Charles the ninth-largest city in Missouri. Situated on the Missouri River, it is a northwestern suburb of St. Louis. Founded circa 1769 as Les Petites Côtes, or "The Little Hills" in French, by Louis Blanchette, a French-Canadian fur trader, when the area was nominally ruled by Spain following the... Show more

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