Tbilisi's 2026 population is now estimated at 1,089,860. In 1950, the population of Tbilisi was 611,653. Tbilisi has grown by 2,840 in the last year, which represents a 0.26% 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 Tbilisi, which typically includes Tbilisi's population in addition to adjacent suburban areas.