Utsunomiya's 2025 population is now estimated at 517,568. In 1950, the population of Utsunomiya was 113,754. Utsunomiya experienced a decrease of -1,265 residents over the past year, marking an annual decline of -0.24%.These population estimates and projections come from the latest revision of the UN World Urbanization Prospects. These estimates represent the Urban agglomeration of Utsunomiya, which typically includes Utsunomiya's population in addition to adjacent suburban areas.