Home Postcodes by state NSW 2380 Postcode 2380 2380 is the postcode for 9 localities in NSW: Blue Vale, Emerald Hill, Ghoolendaadi, Gunnedah, Kelvin, Marys Mount and 3 more. Localities with postcode 2380Blue ValeNSWEmerald HillNSWGhoolendaadiNSWGunnedahNSWKelvinNSWMarys MountNSWMilroyNSWOrange GroveNSWRangariNSW Postcode 2380 State or territory New South Wales (NSW) Localities 9 Council area Gunnedah Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2379 · Postcode 2381