| Area (km2): | 7 692 024 (land area) 12 000 000 (offshore area) |
| Population (million): | 20.6 (as at October 2005) |
| System of Government: | Federation (‘Commonwealth’) of six States
- New South Wales, Victoria, Queensland, Western Australia, South Australia, Tasmania - and two mainland Territories - Northern Territory and Australian Capital Territory Parliamentary democracy based on Westminster system; Federal Parliament consisting of House of Representatives and Senate |
| Capital: | Canberra (population approximately 326,700 as at December 2005) |
| Main cities (population million): | Sydney (4.2), Melbourne (3.5), Brisbane (1.7), Perth (1.4), Adelaide (1.1), Hobart (0.2), Darwin (0.1) |
| Official language: | English |
| Gross Domestic Product: (current prices) |
A$965.97 billion (2005-06) |
| Exchange rate (November 2006): | A$1 = US$0.7825 A$1 = EU$0.5933 |
| GDP per capita: (current prices) |
A$47 181 (2005-06) |
| Primary petroleum exports: (excluding refined products) |
A$6.004 billion of which LNG comprised A$4.347 billion (2005-06) |
| Primary petroleum imports: (excluding refined products) |
A$12.464 million (2005-06) |