Home Postcodes by state WA 6169 Postcode 6169 6169 is the postcode for 4 localities in WA: Safety Bay, Shoalwater, Waikiki and Warnbro. Localities with postcode 6169Safety BayWAShoalwaterWAWaikikiWAWarnbroWA Postcode 6169 State or territory Western Australia (WA) Localities 4 Council area Rockingham Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 6168 · Postcode 6170