Home Postcodes by state NSW 2865 Postcode 2865 2865 is the postcode for 3 localities in NSW: Bocobra, Gumble and Manildra. Localities with postcode 2865BocobraNSWGumbleNSWManildraNSW Postcode 2865 State or territory New South Wales (NSW) Localities 3 Council area Cabonne Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2864 · Postcode 2866