Postans is an unpopulated suburb of Perth, Western Australia, located within the City of Kwinana.

He arrived in the Colony as a convict in 1850 and after he was released he bought 100 acres (0.40 km2) of land in 1882.

An agriculture research station known as "Medina Research Station", part of the Department of Agriculture and Food of the state government of Western Australia, is located in the suburb.

The suburb is otherwise dominated by several quarries, a tailing pond of the nearby Alcoa alumina refinery and a facility called the "Kwinana Wastewater Treatment Plant".

Media related to Postans, Western Australia at Wikimedia Commons