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