Lyon, MissouriLyon is an unincorporated community in Franklin County, in the U.S. state of Missouri.[1] HistoryA post office called Lyon was established in 1879, and remained in operation until 1903.[2] The community most likely takes its name from Lyon Township.[3] References
38°30′42″N 91°10′27″W / 38.51167°N 91.17417°W
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