Sydney vs Vienna
Sydney is about 29× larger than Vienna by administrative area. Sydney (Australia) covers 12,145 km² (4,689 mi²) with a population of 5.5 million, while Vienna (Austria) covers 415 km² (160 mi²) with 2.0 million residents.
| Metric | Sydney | Vienna |
|---|---|---|
| Area | 12,145 km² | 415 km² |
| Area (mi²) | 4,689 mi² | 160 mi² |
| Population | 5,450,496 | 2,028,499 |
| Population density | 449 /km² | 4,891 /km² |
| Area ratio | Sydney is ~29× larger by area than Vienna. | |
Frequently asked questions
Is Sydney bigger than Vienna?
Yes — Sydney is about 29× larger by area: 12,145 km² vs 415 km².
How big is Sydney?
Sydney, Australia, covers about 12,145 km² (4,689 mi²) of administrative area.
How big is Vienna?
Vienna, Austria, covers about 415 km² (160 mi²) of administrative area.
Which city has more people, Sydney or Vienna?
Sydney has the larger population: 5.5 million vs 2.0 million. Population density is about 449 people/km² in Sydney and 4,891 people/km² in Vienna.
City boundaries from OpenStreetMap. Last updated 2026-08-18.
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