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Sydney is Australia's most populous city, and is also the most populous city in Oceania. In the 2011 census 4,627,345 persons declared themselves as residents of the Sydney Statistical Division - about one-fifth (19.38%) of Australia's total population. If contiguous urban areas are considered, Sydney's population was 3,641,421 persons. Sydney is also the most densely populated city in Australia. The median age of Sydney residents was 35 years, and households comprised an average of 2.7 members. The officially estimated population for the Sydney Statistical Division at 30 June 2010 was 4,575,532. == History == European settlement in Sydney began in 1788, and in 1800 Sydney had around 3,000 inhabitants. It took time for its population to grow - in 1851 its population was only 39,000, compared with 77,000 in Melbourne. The subsequent gold rushes in Victoria caused the population of Melbourne to increase rapidly, while the lesser gold rushes in New South Wales had a less profound effect on the population of Sydney. Sydney overtook Melbourne as Australia's most populous city in the early twentieth century, and reached the million inhabitants milestone around 1925. The opening of the Sydney Harbour Bridge helped pave the way for further urban development north of Sydney Harbour. Post-war immigration and a baby boom helped the population reach two million by 1962. Sydney remained Australia's most populous city throughout the 20th Century, and is projected to retain this position for much of the 21st Century.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Demographics of Sydney」の詳細全文を読む スポンサード リンク
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