Saint Charles (commonly abbreviated St. 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, St. Charles, Missouri is a northwestern suburb of St. Louis.
The city was founded circa 1769 as Les Petites CĂ´tes, or "The Little Hills" in French, by Louis Blanchette, a French-Canadian fur trader. This former French area west of the Mississippi River was nominally ruled by Spain following France's defeat in the Seven Years' War. France had ceded its eastern territories to Great Britain. St. Charles is the third-oldest city in Missouri. For a time, it played a significant role as a river port in the United States' westward expansion, including trade with Native American tribes on the upper Missouri River. It was the starting point of the Boone's Lick Road to the Boonslick.
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