collum-collum postcode nswdl Home ›› Postcode Finder ›› NSWDL ›› Collum-Collum Collum Collum local listingsThe suburb of Collum Collum is located in NSW and has a postcode of 2460. Free collum collum business listing! Get the first free listing in collum collum! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.