Koojan is a small town located between Moora

Moora, Western Australia

Moora is a townsite located 177 km north of Perth in the Wheatbelt region of Western Australia. Moora was one of the original stations on the Midland railway line to Walkaway, and the townsite was gazetted in 1895...

 and Bindoon

Bindoon, Western Australia

Bindoon is a town located from Perth city on the Great Northern Highway within the Shire of Chittering.Bindoon is where the majority of training and selection takes place for the Australian Special Air Service Regiment...

 in the Wheatbelt region of Western Australia

Western Australia

Western Australia is a state of Australia, occupying the entire western third of the Australian continent. It is bounded by the Indian Ocean to the north and west, the Great Australian Bight and Indian Ocean to the south, the Northern Territory to the north-east and South Australia to the south-east...

.

When the Midland railway

Midland Railway of Western Australia

The Midland Railway of Western Australia was a privately built and operated railway in Western Australia, operated by the British-owned Midland Railway Company of Western Australia...

 was opened in 1894 the site of the present town was established as a railway siding. Some time afterward the area was surveyed and subdivided and the town was gazeted in 1910.

The town is named after the Aboriginal word for a nearby pool of the Moore River

Moore River

Moore River in Western Australia can refer to a number of places:*Moore River - the river itself*Moore River National Park - national park that the river runs through...

. The name was first recorded on maps which were surveyed in 1861 but the meaning of the word is unknown.