niagara-park postcode nswst Home ›› Postcode Finder ›› NSWST ›› Niagara-Park Niagara Park local listingsThe suburb of Niagara Park is located in NSW and has a postcode of 2250. Free niagara park business listing! Get the first free listing in niagara park! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.