Trevallyn is a suburb of Tasmania, Tasmania and is
about 162 kms north of TAS's capital city of Hobart.
In the 2011 Australian census the population of
Trevallyn was 4,638 when there were 2,388
Females and 2,250 Males living there. The median
age for people living in Trevallyn was 38.

Trevallyn is a suburb of Launceston, in the north of
Tasmania, Australia.

Trevallyn is located on the north western part of
the city (west of the Tamar River and north of the
South Esk River). It is the location of the Cataract
Gorge and the Trevallyn Dam.