Townsville is a city on the north-eastern coast of Queensland, Australia. With a population of 179,011 as of the 2021 census, it is the largest s…Townsville is a city on the north-eastern coast of Queensland, Australia. With a population of 179,011 as of the 2021 census, it is the largest settlement in North Queensland and Northern Australia. It is unofficially considered the capital of North Queensland. Townsville hosts a significant number of governmental, community and major business administrative offices for the northern half of the state.