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 kmē (3,668 sq mi)
Torrens 5,745 kmē (2,218 sq mi)
Gairdner 4,351 kmē (1,680 sq mi)
Mackay 3,494 kmē (1,349 sq mi)
Largest islands
Tasmania 64,519 kmē (24,911 sq mi)
Melville 5,786 kmē (2,234 sq mi)
Kangaroo Island 4,416 kmē (1,705 sq mi)
Groote Eylandt 2,285 kmē (882 sq mi)
Bathurst 1,693 kmē (654 sq mi)
Fraser 1,653 kmē (638 sq mi)
Flinders 1,359 kmē (525 sq mi)
King 1,091 kmē (421 sq mi)
Mornington 1,002 kmē (387 sq mi)