Kirov's 2025 population is now estimated at 520,243. In 1950, the population of Kirov was 208,930. Kirov has grown by 925 in the last year, which represents a 0.18% 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 Kirov, which typically includes Kirov's population in addition to adjacent suburban areas.