| Source | UN (World Urbanization Prospects 2025) |
| Date | 09 Feb 2026 |
| Code | City | Population | Share (%) | Rank | Change | |||
|---|---|---|---|---|---|---|---|---|
| 2025 | 2026 | Australia | World | Population | (%) | |||
| Sydn | Sydney | 4,150,917 | 4,175,163 | 15.5 | 1 | 106 | 24,246 | 0.58 |
| Melb | Melbourne | 3,639,893 | 3,662,000 | 13.6 | 2 | 129 | 22,107 | 0.61 |
| Pert | Perth | 1,079,374 | 1,113,828 | 4.13 | 3 | 467 | 34,454 | 3.19 |
| Bris | Brisbane | 1,071,628 | 1,079,164 | 4.00 | 4 | 478 | 7,536 | 0.70 |
| Adel | Adelaide | 879,249 | 883,038 | 3.27 | 5 | 595 | 3,789 | 0.43 |
| Poin | Point Cook | 404,501 | 406,781 | 1.51 | 6 | 1409 | 2,280 | 0.56 |
| Gold | Gold Coast | 298,750 | 308,772 | 1.14 | 7 | 1886 | 10,022 | 3.35 |
| Newc | Newcastle | 182,884 | 184,559 | 0.684 | 8 | 3306 | 1,675 | 0.92 |
| Dall | Dallas | 121,680 | 122,851 | 0.455 | 9 | 5060 | 1,171 | 0.96 |
| Nort | North Lakes | 101,615 | 112,918 | 0.419 | 10 | 5533 | 11,303 | 11.12 |
| Woll | Wollongong | 106,007 | 106,459 | 0.395 | 11 | 5875 | 452 | 0.43 |
| Hack | Hackham West | 99,819 | 100,587 | 0.373 | 12 | 6221 | 768 | 0.77 |