Changde is a city in the north of Hunan Province, China, with a population of 5,717,218 inhabitants at the 2010 census whom 1,232,182 in the built up area made of 2 urban districts (Dingcheng and Wuling). In 589 its name was changed to Wuling, and under the Tang Dynasty (618-907) it became the seat of Lang prefecture. Under the Song Dynasty (960 - 1279) the name of the prefecture was changed to Tingzhou, and in 1164-74 it became a superior prefecture called Changde. This status was retained until 1912, when the superior prefecture was abolished and the city became a county seat.