Home Postcodes by state NSW 2087 Postcode 2087 2087 is the postcode for 2 localities in NSW: Forestville and Killarney Heights. Localities with postcode 2087ForestvilleNSWKillarney HeightsNSW Postcode 2087 State or territory New South Wales (NSW) Localities 2 Council area Northern Beaches Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2086 · Postcode 2088