ellerston postcode nsw Home ›› Postcode Finder ›› NSW ›› Ellerston Ellerston local listingsThe suburb of Ellerston is located in NSW and has a postcode of 2337. Free ellerston business listing! 1Ellerston Public School 02 65465157 View more business listings in ellerston Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.