Home Postcodes by state WA 6302 Postcode 6302 6302 is the postcode for 23 localities in WA: Badgin, Balladong, Burges, Caljie, Cold Harbour, Daliak and 17 more. Localities with postcode 6302BadginWABalladongWABurgesWACaljieWACold HarbourWADaliakWAFlintWAFlynnWAGilgeringWAGreenhillsWAGwambygineWAInkpenWAKauringWAMalebellingWAMount HardeyWAMount ObservationWANarralogganWAQuellingtonWASt RonansWATalbotWATalbot WestWAWilberforceWAYorkWA Postcode 6302 State or territory Western Australia (WA) Localities 23 Council area York; Beverley Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6290 · Postcode 6304