Ujjain's 2025 population is now estimated at 668,371. In 1950, the population of Ujjain was 125,832. Ujjain has grown by 13,806 in the last year, which represents a 2.11% 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 Ujjain, which typically includes Ujjain's population in addition to adjacent suburban areas.