wellington postcode nsw Home ›› Postcode Finder ›› NSW ›› Wellington Wellington local listingsThe suburb of Wellington is located in NSW and has a postcode of 2820. Free wellington business listing! 1St Mary's Central SchoolPercy St 02 684518222Wellington Public School182-188 Percy St 02 684540803Wellington High School80-98 Whiteley St 02 68452344 View more business listings in wellington Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.