Maclean is a town in Clarence Valley local government area in the Northern Rivers region of New South Wales, Australia. It is on the Cl…Maclean is a town in Clarence Valley local government area in the Northern Rivers region of New South Wales, Australia. It is on the Clarence River and near the Pacific Highway. At the 2021 census, Maclean had a population of 2,778, total urban area including Townsend and Gulmarrad is more than 8,304.