Dubbo / ˈ d ʌ b oʊ / is a city in the Orana Region of New South Wales, Australia.It is the largest population centre in the Orana region, with a population of 38,392 at June 2018.. The city is located at the intersection of the Newell, Mitchell, and Golden highways. The nearest city, Orange, is about 144 km (89 mi) away.Dubbo is located roughly 275 m (902 ft) above sea level, 303 km (188 mi ...