wollombi postcode nswst Home ›› Postcode Finder ›› NSWST ›› Wollombi Wollombi local listingsThe suburb of Wollombi is located in NSW and has a postcode of 2325. Free wollombi business listing! 1Wollombi Public SchoolMaitland Rd 02 49983229 View more business listings in wollombi Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.