Tonight is census night
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There's also an interesting population pyramid and projections for australia here
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What is the Census?
The Census of Population and Housing aims to accurately count the number of people in Australia, their key characteristics, and the dwellings in which they live.
It is conducted by the Australian Bureau of Statistics (ABS) once every five years.
During the Census every household and person in the country is required to answer specific questions on the paper form or through eCensus online.
When is the next Census?
The 16th Census of Population and Housing will take place on the night of 9 August 2011. The 2011 Census also marks a significant milestone – 100 years of national Census taking in Australia.
Why is it important?
The Census underpins Australia’s democracy and is crucial to communities, private institutions and all levels of government when planning infrastructure, community services and facilities where you live.
For example Census information helps to determine where schools, hospitals, and roads are needed.
Federal funding arrangements to the states and territories, including allocation of GST revenue, are also based on Census information
There's also an interesting population pyramid and projections for australia here