Home Postcodes by state NSW 2759 Postcode 2759 2759 is the postcode for 2 localities in NSW: Erskine Park and St Clair. Localities with postcode 2759Erskine ParkNSWSt ClairNSW Postcode 2759 State or territory New South Wales (NSW) Localities 2 Council area Penrith Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2758 · Postcode 2760