north-toowoomba postcode qld Home ›› Postcode Finder ›› QLD ›› North-Toowoomba North Toowoomba local listingsThe suburb of North Toowoomba is located in QLD and has a postcode of 4350. Free north toowoomba business listing! Get the first free listing in north toowoomba! Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.