Other cities in the 636 area code include: Festus, Troy, Union, Eureka, Warrenton, Valley Park, De Soto, Pevely, Cottleville, Crystal City, Fenton, Herculaneum, Wright City, Hillsboro, Moscow Mills, Winfield, Marthasville, Pacific, Truesdale, Jonesburg, Hawk Point, West Alton, New Melle, Portage Des Sioux, Foristell, Old Monroe, Augusta, Cedar Hill, High Hill, Foley, Kimmswick, and Truxton.
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 St. Charles County. It lies to the northwest of St. Louis, Missouri on the Missouri River.Founded in 1765 as Les Petites Côtes, "The Little Hills", by Louis Blanchette, a French-Canadian fur trader, when the area was nominally ruled by Spain following the Seven Years War, it is the third-oldest city west of the Mississippi.
St. Louis (/ s eɪ n t ˈ l uː ɪ s /) is an independent city and a major United States port in eastern Missouri. The city was developed along the western bank of the Mississippi River, which forms Missouri's eastern border with Illinois. At the 2010 census, St. Louis' population was 319,294 and a 2013 estimate put the population at 318,416, making it the 58th-most populous U.S. city in 2013 and the second-largest city in the state. The St. Louis metropolitan area, known as Greater St. Louis (CSA), includes the city as well as nearby areas in Missouri and Illinois; it is among the 20 largest metropolitan areas in the United States with a population of 2,905,893. The St.
O'Fallon / oʊ ˈ f æ l ən / is a city along Interstate 70 and Interstate 64 between Lake St. Louis and St. Peters in Saint Charles County, Missouri. It is part of the St. Louis Metropolitan Statistical Area. As of the 2010 census O'Fallon had a population of 79,329, making the city the largest municipality in St. Charles County and seventh largest in the state of Missouri. In 2006 Money Magazine named O'Fallon as one of its "Best 100 Places to Live." (39 out of 100) Money Magazine also ranked O'Fallon 68 out of 100 in 2008 and 26 out of 100 in 2010. As noted above, O'Fallon, along with its namesake in St. Clair County, Illinois is part of the St. Louis Metropolitan Statistical Area.
The 636 area code lies within the Central Daylight Time Zone (or CDT). The current time in CDT is 3:43 PM on Jul 11, 2020.