In the 2006 Census, 455,028 people identified themselves as Aboriginal and Torres Strait Islander, which represented 2.3% of the total Australian population. However, after taking into account the post Census adjustments (see below) the final estimated resident Indigenous population of Australia was higher at 517,043 or 2.5% of the total population (20 697 880 persons), at 30 June 2006.
Estimated resident population (ERP)
The ERP is the official measure of the Australian population and its states and territories. Although the population is counted at Census time (every 5 years in August), there are a number of factors that need to be adjusted to arrive at a more accurate figure. These factors include:
Removing overseas visitors, and adding Australian citizens who were overseas on the night of the Census;
Adjusting for other people missed in the Census count; and
Allocating Indigenous status where this was not stated
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