Nakuru's 2025 population is now estimated at 453,330. In 1950, the population of Nakuru was 19,582. Nakuru has grown by 16,340 in the last year, which represents a 3.74% 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 Nakuru, which typically includes Nakuru's population in addition to adjacent suburban areas.