Port Douglas is a coastal town and locality in the Shire of Douglas, Queensland, Australia, approximately 60 km north of Cairns. In the 2…Port Douglas is a coastal town and locality in the Shire of Douglas, Queensland, Australia, approximately 60 km north of Cairns. In the 2021 census, the locality of Port Douglas had a population of 3,650 people. The town's population can often double, however, with the influx of tourists during the peak tourism season from May to September.