330,469
Higher than 61% of region (sa4) areas.
Estimated resident population (ABS), 2025.
Illawarra · Region (SA4)
How well-off the area is, how fast its population is growing, and the businesses and new homes here.
A growing population of 330,469 people defines the Illawarra region. This steady increase in residents supports a larger local economy and a diversifying range of services across the area.
Annual population estimates and change since the census.
The population grew by 5.2% since 2021, a rate that is about the same as the 6.1% seen across New South Wales.
330,469
Higher than 61% of region (sa4) areas.
Estimated resident population (ABS), 2025.
5.2%
Lower than 59% of region (sa4) areas.
Population growth since the 2021 Census, from ABS annual estimates.
Australian Bureau of Statistics. (2021). Economy & Advantage in Illawarra [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sa4/107/illawarra/topic/economy-advantage