Home Postcodes by state NSW 2280 Postcode 2280 2280 is the postcode for 8 localities in NSW: Belmont, Belmont North, Belmont South, Croudace Bay, Floraville, Jewells and 2 more. Localities with postcode 2280BelmontNSWBelmont NorthNSWBelmont SouthNSWCroudace BayNSWFloravilleNSWJewellsNSWMarks PointNSWValentineNSW Postcode 2280 State or territory New South Wales (NSW) Localities 8 Council area Lake Macquarie Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2278 · Postcode 2281