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1. AREA OF STATE:
Mainland 2,526,786 square km
Islands 3,089 square km
Total 2,529,875 square km (33% of Australia)
Mainland 12,889 km
Islands 7,892 km
Total 20,781 km
Most northerly point : Cape Londonderry - Latitude 13° 44' 36"; Longitude 126° 47' 43" Most southerly point: Torbay Head - Latitude 35° 8'10"; Longitude 117° 38' 13" Most westerly point : Steep Point - Latitude 26° 08' 40"; Longitude 113° 09' 27" Most easterly point : Western Australian border - Longitude 129°
Most northerly town : Wyndham
Latitude 15° 29' 16"; Longitude 128° 07' 08" - 3216 km by road and 2205 km by air from Perth.
Most southerly town : Albany
Latitude 35° 01' 07"; Longitude 117° 52' 56" - 409 km by road and 389 km by air from Perth.
Most westerly town : Denham
Latitude 25° 55' 41"; Longitude 113° 31' 58" - 834 km by road and 708 km by air from Perth.
Most easterly town : Eucla
Latitude 31° 40' 35"; Longitude 128° 52' 54" - 1429 km by road and 1215 km by air from Perth.
Highest town in state : Tom Price - 750 metres above sea level.
Most isolated town : Telfer
Oldest settlement : Albany 1826 located 409 kilometres from Perth, on the southern coast.
Oldest inland settlement : York 1830 being situated approximately 97 kilometres by road east of Perth in the Avon Valley.
Highest building : in the state is the transmitter hut on Mount Nameless, near Tom Price - 1126 metres above sea level.
Tallest building or tower : Tower Zero at Exmouth - 387 metres tall.
4. LARGEST LAKES, TALLEST MOUNTAINS ETC
Largest: Dirk Hartog Island, 613 square km
2nd Largest: Barrow Island, 222 square km
There are approximately 3,747 islands off the coast of Western Australia
Largest: Lake Mackay, 3494 square km ( on WA/NT border, 80% in WA)
2nd Largest: Lake Barlee, 1980 square km.
Longest: Gascoyne River, 865 km
2nd Longest: Murchison River, 820 km
Longest in Kimberley: Fitzroy/Hann, 733 km
Longest in South West: Swan/Avon, 365 km
Highest: Mount Meharry, 1253 metres (Hamersley Range - the 20 highest peaks in WA are in the Hamersley Range)
Highest in Kimberley: Mount Wells, 983 metres
Highest in desert region: Mount Hinckley, 1,013 metres
Highest in south west: Bluff Knoll, 1,073 metres
Highest in Darling Range: Mount Saddleback, 593 metres
Largest: Great Victoria Desert, 348,750 square km (WA/SA)
2nd Largest: Great Sandy Desert, 267,250 square km
Tanami Desert, 184,500 square km (WA/NT)
Gibson Desert, 156,000 square km
Little Sandy Desert, 111,500 square km
Highest: King George Falls, twin falls of approx 80 metres
2nd Highest: Mitchell Falls - 3 tiered falls approx 60-80 metres drop
The cliffs of the Great Australian Bight, Wylie Scarp, Baxter Cliffs, Hampton Tableland and Bunda Cliffs (in South Australia) are the longest in Australia - 790 km (205 km in SA)
Pannikin Plain Cave on the Nullarbor Plain is one of the world's deepest and longest underwater caves.
The Central Park building at 261.7 metres (51 floors) is Perth's tallest.
The length of the WA border with NT and SA is 1862 km.
Zero Mile Peg
The Zero kilometre peg for Western Australia is a plaque on the wall of the Central Government Building (originally the General Post Office) at the corner of Cathedral Avenue and St Georges Terrace.
Longest Feature Name
Murrawong Gnulling Gnulling Pool (25 letters), on Yalgamine Creek, a small tributary of the Murchison River.
The longest name near Perth is Ngangaguringguring Hill (18 letters)
Most common feature names
Number 1 Well 71
White Well 68
6 Mile Well 46
Red Hill 34
Sandy Creek 16
Gum Creek 11
Round Hill 11
Bald Hill 11
Black Rock 11
Rocky Pool 10
Long Pool 7