Australia Population 2025 By State 2025. The current population of australia in 2025 is 26,699,482, a 0.98% increase from 2023. Melbourne is projected to be the largest city in australia by 2071 with a projected population between 6.5 million and 9.9 million, surpassing sydney between 2032 and 2046.

Population structure (mid 2025) urbanization At the last census in 2021, australia’s population was just over 25.5 million people.