mount-isa-city postcode qld Home ›› Postcode Finder ›› QLD ›› Mount-Isa-City Mount Isa City local listingsThe suburb of Mount Isa City is located in QLD and has a postcode of 4825. Free mount isa city business listing! Get the first free listing in mount isa city! Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.