mount-knowles postcode nswst Home ›› Postcode Finder ›› NSWST ›› Mount-Knowles Mount Knowles local listingsThe suburb of Mount Knowles is located in NSW and has a postcode of 2850. Free mount knowles business listing! Get the first free listing in mount knowles! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.