Borallon is a rural locality in the Somerset Region, Queensland, Australia. In the 2021 census, Borallon had a population of 90 people. The locality is bounded to the north-west and west by the Brisbane River, which then flows through the locality, and then bounds the locality to the south-east and east, putting the locality on both sides of the Brisbane River. Burt…Borallon is a rural locality in the Somerset Region, Queensland, Australia. In the 2021 census, Borallon had a population of 90 people. The locality is bounded to the north-west and west by the Brisbane River, which then flows through the locality, and then bounds the locality to the south-east and east, putting the locality on both sides of the Brisbane River. Burtons Bridge on E Summervilles Road is one of the crossing points for the river.