Home Postcodes by state WA 6535 Postcode 6535 6535 is the postcode for 10 localities in WA: Alma, Bowes, East Bowes, Gregory, Horrocks, Isseka and 4 more. Localities with postcode 6535AlmaWABowesWAEast BowesWAGregoryWAHorrocksWAIssekaWANorthamptonWAOgilvieWASandy GullyWAYallabatharraWA Postcode 6535 State or territory Western Australia (WA) Localities 10 Council area Northampton Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6532 · Postcode 6536