Kelmscott is a southeastern suburb of Perth, Western Australian within the local government area of the City of Armadale. It is 23 kilometres (14 mi) southeast of Perth along the Albany Highway.

The City of Armadale is a local government area in the southeastern suburbs of the Western Australian capital city of Perth, about 28 kilometres (17.4 mi) southeast of Perth's central business district. The City covers an area of 560 square kilometres (216 sq mi), much of which is state forest rising into the Darling Scarp to the east, and had a population of almost 80,000 as at the 2016 Census. At the 2021 census, the population had risen to 94,184.