Electoral district of Blacktown

Blacktown New South Wales—Legislative Assembly
Location within Sydney
State	New South Wales
Created	1941
MP	John Robertson
Party	Australian Labor Party
Namesake	Blacktown
Electors	54,495 (2015)
Area	33.03 km2 (12.8 sq mi)
Demographic	Outer Metropolitan

Blacktown is an electoral district of the Legislative Assembly in the Australian state of New South Wales. The current member for Blacktown is John Robertson, former Opposition Leader. He stepped down as the Opposition Leader on 23 December 2014.

Blacktown is a 33.03 km² urban electorate in Sydney's outer west, taking in the suburbs of Blacktown, Doonside, Kings Park, Marayong, Woodcroft and parts of Bungarribee, Lalor Park, Quakers Hill and Seven Hills.

Blacktown is known as a largely working-class area, and as such, the electorate has tended to strongly support the Australian Labor Party, which has held the seat for all but three years since its inception. It was briefly marginal during the late 1950s, when long-serving member John Freeman was forced into retirement after trying and failing to find a safer seat. Liberal Alfred Dennis won the seat in the 1959 election, but held it for only one term before Labor regained it. The seat has since reverted to its usual tendencies.