Castlereagh, New South Wales

Castlereagh Sydney, New South Wales
Hadley Park, c. 1810
Castlereagh
Coordinates	33°40′19″S 150°40′42″E / 33.67194°S 150.67833°E / -33.67194; 150.67833
Population	1,248 (2021 census)[1]
Established	1810
Postcode(s)	2749[2]
Elevation	31 m (102 ft)
Location	67 km (42 mi) north-west of Sydney CBD
LGA(s)	City of Penrith
State electorate(s)	Londonderry Penrith
Federal division(s)	Lindsay
Suburbs around Castlereagh: Yarramundi Agnes Banks Londonderry Yellow Rock Castlereagh Cranebrook Emu Heights Penrith Penrith

Castlereagh is a suburb of Sydney, in the state of New South Wales, Australia. Castlereagh is 67 kilometres (42 mi) north-west of the Sydney central business district, in the local government area of the City of Penrith and is part of the Greater Western Sydney region.