St. Louis is a town in Pottawatomie County, Oklahoma, United States. The population was 121 by the 2020 United States census. St. Louis originally began in 1906 as a community named Simpsonville when J. R. Simpson opened a cotton gin, a gristmill and then a general store. It is unclear when the name of the community was changed to St. Louis. A town plat wa…St. Louis is a town in Pottawatomie County, Oklahoma, United States. The population was 121 by the 2020 United States census. St. Louis originally began in 1906 as a community named Simpsonville when J. R. Simpson opened a cotton gin, a gristmill and then a general store. It is unclear when the name of the community was changed to St. Louis. A town plat was not filed until March 9, 1927, and a post office was established in 1928.
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