Home Postcodes by state NSW 2770 Postcode 2770 2770 is the postcode for 13 localities in NSW: Bidwill, Blackett, Dharruk, Emerton, Hebersham, Lethbridge Park and 7 more. Localities with postcode 2770BidwillNSWBlackettNSWDharrukNSWEmertonNSWHebershamNSWLethbridge ParkNSWMinchinburyNSWMount DruittNSWMount Druitt VillageNSWShalveyNSWTregearNSWWhalanNSWWillmotNSW Postcode 2770 State or territory New South Wales (NSW) Localities 13 Council area Blacktown Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2769 · Postcode 2773