mount-colah postcode nswst Home ›› Postcode Finder ›› NSWST ›› Mount-Colah Mount Colah local listingsThe suburb of Mount Colah is located in NSW and has a postcode of 2079. Free mount colah business listing! Get the first free listing in mount colah! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.