Home Postcodes by state WA 6000 Postcode 6000 6000 is the postcode for 3 localities in WA: Perth, Perth Gpo and City Delivery Centre. Localities with postcode 6000City Delivery CentreWAPerthWAPerth GpoWA Postcode 6000 State or territory Western Australia (WA) Localities 3 Council area Mainly Perth, partly Vincent Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5950 · Postcode 6003