Type a suburb, a postcode or a council. New South Wales publishes no suburb-level rents, so a suburb there will take you to the postcode that covers it.
A page exists only where the government published enough to describe a market: a current figure, at least 20 new leases behind it, and at least 8 quarters of history. Markets below that get no page rather than a thin one, and Western Australia, the Northern Territory and the ACT publish no rent series we can republish at all. Method, sources and licences.