cumbalum postcode nswst Home ›› Postcode Finder ›› NSWST ›› Cumbalum Cumbalum local listingsThe suburb of Cumbalum is located in NSW and has a postcode of 2478. Free cumbalum business listing! Get the first free listing in cumbalum! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.