NSW · ranked
Fastest-growing suburbs and areas in New South Wales
All New South Wales Statistical Area Level 2 regions ranked by 1-year population change (ABS Estimated Resident Population, June 2025 release). SA2 areas don't always align with suburb boundaries. SA2s where we publish a full profile are linked.
The fastest-growing area in New South Wales over the year to June 2025 was Box Hill - Nelson (+17.4%, now 26,348 people), followed by Austral - Greendale (+15.8%) and Marsden Park - Shanes Park (+11.6%).
- 1Box Hill - Nelson
Rouse Hill - McGraths Hill · Sydney - Baulkham Hills and Hawkesbury · Pop. 26,348
+17.4%
SA2 areas that shrank in NSW
NSW Statistical Area Level 2 regions where population fell over the year to June 2025. Same 500-resident floor applies. Helpful context when a state-wide growth story has local exceptions.
What is the fastest-growing suburb in New South Wales?
Box Hill - Nelson, which grew +17.4% in the year to June 2025 (ABS Estimated Resident Population, areas with at least 500 residents). The ABS publishes this figure for SA2 areas, which can cover more than one suburb.
How many New South Wales areas lost population?
113 SA2 areas shrank over the year to June 2025 and 488 grew. The largest fall was in Bourke - Brewarrina (-2.5%).
Source: ABS Estimated Resident Population by SA2, June 2025 release. Excludes SA2s with fewer than 500 residents. See methodology for caveats on SA2-to-suburb mapping. National rankings: Australia's fastest-growing suburbs.