Ranong is a town in southern Thailand, capital of the Ranong Province and the Mueang Ranong District. The town covers completely the areā¦Ranong is a town in southern Thailand, capital of the Ranong Province and the Mueang Ranong District. The town covers completely the area of the tambon Khao Niwet. As of 2024, it had a population of 16,909. Ranong lies 586 kilometres south-southwest of Bangkok by road.