data sydney 2024Sydney's 2025 population is now estimated at 5,248,790. In 1950, the population of Sydney was 1,689,940. Sydney has grown by 63,890 in the last year, which represents a 1.23% annualGreater Sydney % Greater Sydney New South Wales % New South Wales Australia % Australia; Aborinal andor Torres Strait Islander: 90,939: 1.7: 278,043: 3.4: 812,728: 3.2: