Gladstone is a coastal city in the Gladstone Region, Queensland, Australia. In the 2021 census, the Gladstone urban area had a population of 45,185 people. It is 517 km by road north-west of the state capital, Brisbane, and 108 km south-east of Rockhampton. Situated between the Calliope and Boyne Rivers, Gladstone is home to Queensland's largest multi-commodity shipping port, the Port of Gladstone.