Home Postcode finder NSW Double Bay Double Bay postcode NSW Double Bay is a locality in New South Wales covered by postcode 2028. Postcode 2028 State or territory New South Wales (NSW) Region Waterloo Add a free Double Bay business listing More business listings in Double Bay Businesses in Double Bay3D Rendering Company4/306-310 New South Head Rd, Double Bay NSW 2028, Australia · 61293614144Accent Antennas4 29 Ocean Avenue · 1300 115 727All On 4 Clinic Double Bay204/45 Cross Street, Double Bay New South Wales 2028, Australia · (02) 8823 4403 Common questionsWhat is the postcode for Double Bay?Double Bay, NSW has the postcode 2028.What state is Double Bay in?Double Bay is in New South Wales (NSW).Does postcode 2028 cover more than one suburb?No. Postcode 2028 covers Double Bay only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.