Zigong, formed by the merger of the two former towns of Ziliujing and Gongjing, is a prefecture-level city in Sichuan, Southwestern China. …Zigong, formed by the merger of the two former towns of Ziliujing and Gongjing, is a prefecture-level city in Sichuan, Southwestern China. According to the 2020 Chinese census, the prefecture-level city of Zigong has a population of 2,489,256 inhabitants, less than its population in 2010. However, the built-up area, consisting of the 4 urban districts, grew, with 1,297,695 inhabitants.