Home Postcodes by state NSW 2671 Postcode 2671 2671 is the postcode for 7 localities in NSW: Alleena, Back Creek, Burcher, Lake Cowal, North Yalgogrin, West Wyalong and 1 more. Localities with postcode 2671AlleenaNSWBack CreekNSWBurcherNSWLake CowalNSWNorth YalgogrinNSWWest WyalongNSWWyalongNSW Postcode 2671 State or territory New South Wales (NSW) Localities 7 Council area Bland; Lachlan Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2669 · Postcode 2672