Dagonia was an unincorporated community in western Reynolds County, in the U.S. state of Missouri. The community was on the east bank of Logan Creek along Missouri Route B.Corridon SE, MO, 7.5 Minute Topographic Quadrangle, USGS, 1967 (1985 rev.) Reynolds is about to the north along Route B and Ellington lies approximately to the southeast.Missouri Atlas & Gazetteer, DeLorme, 1998, First edition, p. 56,

History A post office called Dagonia was established in 1897, and remained in operation until 1917. The community has the name of the local Dagonia family.

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