Alstonville is a town in northern New South Wales, Australia, part of the region known as the Northern Rivers. Alstonville is on the Bruxner Hi…Alstonville is a town in northern New South Wales, Australia, part of the region known as the Northern Rivers. Alstonville is on the Bruxner Highway between the town of Ballina and city of Lismore. The village of Wollongbar is 4 km to the west of Alstonville. Alstonville is the service centre of the area known as the Alstonville Plateau.