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.
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.
Coordinates: 37°30′28″N 94°01′22″W / 37.50778°N 94.02278°W