Zigong's 2025 population is now estimated at 791,579. In 1950, the population of Zigong was 189,459. Zigong has grown by 11,895 in the last year, which represents a 1.53% annual change.These population estimates and projections come from the latest revision of the UN World Urbanization Prospects. These estimates represent the Urban agglomeration of Zigong, which typically includes Zigong's population in addition to adjacent suburban areas.