Home Postcodes by state WA 6713 Postcode 6713 6713 is the postcode for 2 localities in WA: Dampier and Dampier Archipelago. Localities with postcode 6713DampierWADampier ArchipelagoWA Postcode 6713 State or territory Western Australia (WA) Localities 2 Council area Karratha Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6712 · Postcode 6714