Home Postcodes by state SA 5066 Postcode 5066 5066 is the postcode for 7 localities in SA: Beaumont, Burnside, Erindale, Hazelwood Park, Stonyfell, Waterfall Gully and 1 more. Localities with postcode 5066BeaumontSABurnsideSAErindaleSAHazelwood ParkSAStonyfellSAWaterfall GullySAWattle ParkSA Postcode 5066 State or territory South Australia (SA) Localities 7 Council area Burnside Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5065 · Postcode 5067