toowoon-bay postcode nsw Home ›› Postcode Finder ›› NSW ›› Toowoon-Bay Toowoon Bay local listingsThe suburb of Toowoon Bay is located in NSW and has a postcode of 2261. Free toowoon bay business listing! Get the first free listing in toowoon bay! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.