Styx is a rural locality in the local government area (LGA) of Derwent Valley in the South-east LGA region of Tasmania. The locality is about west of the town of New Norfolk. The 2016 census recorded a population of nil for the state suburb of Styx.
Styx is a confirmed locality.
The Styx River rises in the west of the locality and flows through to the east.
Route B61 (Gordon River Road) passes to the north. From there, Styx Road provides access to the locality.