Perth is home to four of Australia's five most advantaged suburbs, and people are flocking to share in WA's wealth boom in record numbers.

With the nation's population edging towards 23 million over the next three months, Australian Bureau of Statistics figures released today confirm WA's reputation as its most prosperous State.

The resources rivers of gold delivered it a $239 billion economy last year, and the ABS says more than 80,000 people moved there up to last September, a record increase of 3.4 per cent.

The ABS has also revealed millionaires row Peppermint Grove is the most advantaged area in Australia.

The ABS' Socio-Economic Indexes for Areas ranks suburbs according to relative advantage and disadvantage, with the north shore Sydney area of Ku-ring-gai second on the list.

Nedlands, Cottesloe and Cambridge make up the top five.

Australia's most disadvantaged area is said to be the Aboriginal community of Yarrabah, 50km east of Cairns, in Queensland.

Cherbourg in Queensland, Belyuen in the Northern Territory, Aurukun in Queensland and Woorabinda in Queensland make up the top five disadvantaged suburbs in Australia.

The official population of Australia stood at 22,785,500 on September 30, 2012.

That was an increase of 382,500 since 30 September 2011 and 101,900 since 30 June 2012.

Australia's overseas migration was 32 per cent higher than the previous year, with 228,000 joining the population - the highest in almost five years.

Those numbers accounted for around 60 per cent of Australia's total population growth.

Last year's 303,600 births represented an increase of 2.7 per cent, while the 149,100 deaths represented an increase of 1.3 per cent.

WA's population reached 2.45 million at 30 September 2012, with Bjorn Jarvis, director of ABS demography, saying the boom state was experiencing its biggest growth since the 70s.

“Western Australia experienced record levels of population growth and the highest annual growth rate since the early 1970s,“ Mr Jarvis said.

“The state had a high level of net overseas migration of 50,600 people (up 46 per cent), a natural increase (births minus deaths) of 20,000 (up 5 per cent) and a net interstate migration of 11,100 (up 59 per cent) for the year ending September 2012.”

Only Tasmania experienced population growth of less than one per cent in the past year, with Victoria adding the most people to its population with 94,800 people arriving up to the end of September 2012.

Behind WA, Queensland and the Australian Capital Territory experienced the highest population growth by percentage, both increasing by two per cent.

The West Australian

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