Population statistics are measures of the size, growth,
composition and geographic distribution of the population as
well as the components that shape population change, notably
births, deaths and migration. Population statistics underpin the
discussion of a wide range of issues of concern to the
community, including immigration, cultural diversity, ageing and
population sustainability. Population trends are associated with
many social changes and statistics on these trends assist
governments develop social and economic policy. Australia’s
population is continually changing. Like many developed
countries the population is ageing and the distribution of the
population among the states and territories is changing. Changes
in Australia's population affect policy areas such as health,
education, housing, the labour market and the environment. There
are important legislative requirements for the Australian Bureau
of Statistics (ABS) to produce population estimates. The
legislation which determines the distribution