Home Postcodes by state NSW 2312 Postcode 2312 2312 is the postcode for 2 localities in NSW: Minimbah and Nabiac. Localities with postcode 2312MinimbahNSWNabiacNSW Postcode 2312 State or territory New South Wales (NSW) Localities 2 Council area Mid-Coast Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2311 · Postcode 2315