Home Postcodes by state NSW 2828 Postcode 2828 2828 is the postcode for 7 localities in NSW: Black Hollow, Bourbah, Gulargambone, Mount Tenandra, Quanda, Tonderburine and 1 more. Localities with postcode 2828Black HollowNSWBourbahNSWGulargamboneNSWMount TenandraNSWQuandaNSWTonderburineNSWWarrumbungleNSW Postcode 2828 State or territory New South Wales (NSW) Localities 7 Council area Coonamble; Mainly Gilgandra, partly Coonamble Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2827 · Postcode 2829