What was the population of the Sydney, Australia central business district in 2014?
Chief Secretary's building: The Chief Secretary’s building (originally the Colonial Secretary's building) is a heritage-listed state government administrative building of the Victorian Free Classical architectural style located at 121 Macquarie Street, 65 Bridge Street, and at 44-50 Phillip Street in the Sydney central business district of New South Wales, Australia. New South Wales:  In March 2014 , the estimated population of New South Wales was 7.5 million, making it Australia's most populous state.
7.5 million