Largest cities
Sydney 4,699,000 pop., 4,836,000 urban aggl.
Melbourne 4,586,000 pop., 4,709,000 urban aggl.
Brisbane 2,288,000 pop., 3,039,000 urban aggl.
Perth 2,044,000 pop., 2,101,000 urban aggl.
Adelaide 1,245,000 pop., 1,271,000 urban aggl.
Highest mountains
Mount Kosciusko 2,228 m (7,310 ft)
Mount Townsend 2,209 m (7,247 ft)
Longest rivers
Darling 2,740 km (1,703 mi)
Murray 2,520 km (1,566 mi)
Murrumbidge 1,575 km (979 mi)
Lachlan 1,370 km (851 mi)
Cooper Creek 1,113 km (692 mi)
Flinders 1,004 km (624 mi)
Largest lakes
Eyre 9,500 km² (3,668 sq mi)
Torrens 5,745 km² (2,218 sq mi)
Gairdner 4,351 km² (1,680 sq mi)
Mackay 3,494 km² (1,349 sq mi)
Largest islands
Tasmania 64,519 km² (24,911 sq mi)
Melville 5,786 km² (2,234 sq mi)
Kangaroo Island 4,416 km² (1,705 sq mi)
Groote Eylandt 2,285 km² (882 sq mi)
Bathurst 1,693 km² (654 sq mi)
Fraser 1,653 km² (638 sq mi)
Flinders 1,359 km² (525 sq mi)
King 1,091 km² (421 sq mi)
Mornington 1,002 km² (387 sq mi)