Port Stephens is a large natural harbour located about 160 kilometres (99 mi) north-east of Sydney in New South Wales, Australia. It lies wholly within the Port Stephens local government area (LGA) although its northern shoreline forms the boundary between the Port Stephens and Great Lakes LGAs. More than 26,000 people live within 3 km (1.9 mi) of its 113 km (70 mi) long shoreline and more than 32,000 live within 10 km (6 mi).