Home Postcodes by state NSW 2874 Postcode 2874 2874 is the postcode for Tullamore, NSW. Localities with postcode 2874TullamoreNSW Postcode 2874 State or territory New South Wales (NSW) Localities 1 Council area Mainly Parkes, partly Lachlan Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2873 · Postcode 2875