Nanjing - Wikipedia Nanjing[b] is the capital of Jiangsu province in China The city, which is located in the southwestern corner of the province, has 11 districts, an administrative area of 6,600 square kilometres (2,500 sq mi), and as of 2021 [update] a population of 9,423,400 [6] Situated in the Yangtze River Delta, Nanjing has a prominent place in Chinese history and culture, having served as the capital of