It is the second largest city in the province, after its capital Nanjing. The city is located on the lower reaches of the Yangtze River and the shores of Lake Tai and belongs to the Yangtze River Delta region. Suzhou is a prefecture-level city with a population of 4.33 million in its city proper, and a total resident population (as of 2013[update]) of 10.58 million in its administrative area.