In Australia, including in the state of Western Australia, towns are commonly understood to be centres of population not formally declared to be cities or not within the urban area surrounding a city.
References
Higham, G. J. (Geoffrey J.) (2004). Where WAS That? : An Historical Gazetteer of Western Australia / by Geoffrey Higham. Geoproject Solutions Pty Ltd: Winthrop, Western Australia. ISBN 0-9758024-0-2.
Murray, Ian & Goodchild, Brian (2003). Araluen to Zanthus: A Gazetteer of Perth Suburbs and Western Australian Towns. Fremantle, Western Australia: Fremantle Arts Centre Press. ISBN 1-86368-319-4.