Home Postcodes by state SA 5453 Postcode 5453 5453 is the postcode for 16 localities in SA: Armagh, Barinia, Benbournie, Boconnoc Park, Clare, Emu Flat and 10 more. Localities with postcode 5453ArmaghSABariniaSABenbournieSABoconnoc ParkSAClareSAEmu FlatSAGillentownSAHill RiverSAHoyletonSAKybungaSAPenworthamSAPolish Hill RiverSASevenhillSASpring FarmSASpring GullySAStanley FlatSA Postcode 5453 State or territory South Australia (SA) Localities 16 Council area Clare and Gilbert Valleys; Wakefield Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5452 · Postcode 5454