Koester, MissouriKoester is an unincorporated community in St. Francois County, in the U.S. state of Missouri.[1] HistoryA post office called Koester was established in 1893, and remained in operation until 1917.[2] The community has the name of C. E. Koester, the proprietor of a local mill.[3] References
38°01′20″N 90°24′34″W / 38.02222°N 90.40944°W
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