Sylvania is an unincorporated community in northwest Dade County, Missouri. Sylvania is located at the intersection of Missouri routes B and E south of Jerico Springs. The Stony Point Prairie Conservation Area lies just to the north along route B.
Sylvania, Missouri Wikipedia
A post office called Sylvania was established in 1869, and remained in operation until 1907. The community's name is derived from Pennsylvania, the home base state of a coal company operating in the area.