Flag Adopted: 15 April 1954
Flag Proportion: 1:2
Use: State, Civil and Military Flag and State Ensign
All Australian External Territories other than Norfolk Island and Christmas Island fly the Australian National Flag, either in practice or nominally (for the uninhabited territories).
Cocos (Keeling) Islands
The Cocos (Keeling) Islands is the only permanently populated external territory besides Norfolk and Christmas Islands. This small island group lies in the Indian Ocean, 2200 km WNW of Western Australia, has a land area of 14 square kilometres and a population of approximately 600.
Australian Antarctic Territory
The Australian Antarctic Territory is nearly as large as Australia itself, but only has a transient population of scientists and researchers at three main bases (Mawson, Davis, and Casey). The Australian flag is flown at these bases when conditions allow.
Coral Sea Islands Territory
The Coral Sea Islands Territory, a group of reefs and tiny atolls in the Coral Sea beyond Queensland′s Barrier Reef, is usually home to three meteorologists on South Willis Island, one of the few islands high enough and large enough to support a semi-permanent population.
Heard and McDonald Islands
The Heard and McDonald Islands are an uninhabited group of rocky islands in the Southern Indian ocean, 4000 km WSW of Western Australia.
Ashmore and Cartier Islands
The Ashmore and Cartier Islands consist of two tiny uninhabited atolls in the Timor Sea approximately 300 km NW of the Kimberley region in Western Australia.
References
Australian Flags
Department of Administrative Services, Australian Government Publishing Service, Canberra, 1995.
Year Book Australia 1995
Australian Bureau of Statistics, Canberra, 1995.