Home Postcodes by state NSW 2870 Postcode 2870 2870 is the postcode for 8 localities in NSW: Alectown, Bumberry, Cookamidgera, Cooks Myalls, Goonumbla, Mandagery and 2 more. Localities with postcode 2870AlectownNSWBumberryNSWCookamidgeraNSWCooks MyallsNSWGoonumblaNSWMandageryNSWParkesNSWTichborneNSW Postcode 2870 State or territory New South Wales (NSW) Localities 8 Council area Parkes; Mainly Parkes, partly Forbes; Mainly Cabonne, partly Parkes Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2869 · Postcode 2871