Wetherill Park is a suburb of Sydney, in the state of
New South Wales, Australia.
Wetherill Park is located 34 kilometres west of the
Sydney central business district, in the local
government area of the City of Fairfield and is
part of the Greater Western Sydney region.

The 2011 census recorded that Wetherill Park as
having a resident population of 6,026.

Wetherill Park sits on the southern border of
Prospect Reservoir. Neighbouring suburbs include
Bossley Park, Smithfield and Prairiewood.