A post office called River Styx was established in 1828, and remained in operation until it was discontinued in 1905.[2] The community and the nearby Styx River derive their names from the Styx, a river in Greek mythology.[3] The gloomy character of a nearby swamp caused the name to be selected.[4] River Styx has been noted for its unusual place name.[5]
There is a cemetery that was established as a pioneer homestead graveyard in 1821.[6]