Xianyang is a prefecture-level city in central Shaanxi province, situated on the Wei River a few kilometers upstream (west) from the provincial capital of Xi'an. Once the capital of the Qin dynasty, it is now integrated into the Xi'an metropolitan area, one of the main urban agglomerations in inland China, with more than 7.17 million inhabitants, its built-up area made of 2 urban districts was 945,420 inhabitants at the 2010 census. It has a total area of 10,213 square kilometres (3,943 sq mi).