steeple-flat postcode nsw Home ›› Postcode Finder ›› NSW ›› Steeple-Flat Steeple Flat local listingsThe suburb of Steeple Flat is located in NSW and has a postcode of 2631. Free steeple flat business listing! Get the first free listing in steeple flat! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.