Takasaki's 2025 population is now estimated at 364,200. In 1950, the population of Takasaki was 38,548. Takasaki experienced a decrease of -816 residents over the past year, marking an annual decline of -0.22%.These population estimates and projections come from the latest revision of the UN World Urbanization Prospects. These estimates represent the Urban agglomeration of Takasaki, which typically includes Takasaki's population in addition to adjacent suburban areas.