On Tuesday 27 June17 was published data of Census 2016 in Australia.
The 2016 Census counted 23.4 million people living in Australia, an increase of 8.8% since the 2011 Census. Australia’s population has more than doubled in the 50 years since the 1966 Census, which counted 11.6 million people. The Census does not count Australians who were overseas at the time of the Census; however, these are included in the official population estimates which are updated every five years after the Census.
Below is an extract from the Census 2016, Australian Bureau of Statistics ...
How many people speaks Polish at home , in Australia:

...and the data regarding particular states in Australia:

