horningsea-park postcode nswst Home ›› Postcode Finder ›› NSWST ›› Horningsea-Park Horningsea Park local listingsThe suburb of Horningsea Park is located in NSW and has a postcode of 2171. Free horningsea park business listing! Get the first free listing in horningsea park! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.