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Ancestry and immigration

Most immigrants to Sydney between 1840 and 1930 were British, Irish or Chinese. At the 2021 census, the most common ancestries were:

At the 2021 census, 40.5% of Sydney's population was born overseas. Foreign countries of birth with the greatest representation are Mainland China, India, England, Vietnam, Philippines and New Zealand.

At the 2021 census, 1.7% of Sydney's population identified as being Indigenous — Aboriginal Australians and Torres Strait Islanders.