Coastline Lengths

Australia is the sixth largest country in the world and is the only one of the top six completely surrounded by water. The mainland and Tasmania also are surrounded by many thousands of small fringing islands and numerous larger ones. Almost 40 per cent of the total coastline length comprises island coastlines. As an island nation, coastlines play an important role in defining National, State and Territory boundaries

Calculations on Australia's coastline lengths are taken from Geoscience Australia's GEODATA Coast 100K 2004 database. The coastline data is nationally uniform, is sourced primarily from the 1:100 000 scale National Topographic Map Series and is the most authoritative data currently available on the length of the entire Australian coastline and the State and Territory coastlines as described in the Maritime Boundary Definitions.

STATE/TERRITORY (kilometres)
MAINLAND LENGTH ISLAND LENGTH TOTAL LENGTH
Western Australia 12 889 7892 20 781
Queensland 6973 6374 13 347
Northern Territory 5437 5516 10 953
South Australia 3816 1251 5067
Tasmania 2833 2049 4882
Victoria 1868 644 2512
New South Wales 2007 130 2137
Jervis Bay Territory 54 3 57
AUSTRALIA 35 877 23 859 59 736