Sadleir is a suburb in south-western Sydney, in the
state of New South Wales, Australia. Sadleir is
located 37 kilometres south-west of the Sydney
central business district, in the local government
area of the City of Liverpool.
In the 2011 Australian census the population of
Sadleir was 3,053 when there were 1,550 Females
and 1,503 Males living there. The median age for
people living in Sadleir was 33.