Cluj-Napoca's 2025 population is now estimated at 308,304. In 1950, the population of Cluj-Napoca was 127,963. Cluj-Napoca experienced a decrease of -39 residents over the past year, marking an annual decline of -0.01%.These population estimates and projections come from the latest revision of the UN World Urbanization Prospects. These estimates represent the Urban agglomeration of Cluj-Napoca, which typically includes Cluj-Napoca's population in addition to adjacent suburban areas.