Matsuyama's 2025 population is now estimated at 502,185. In 1950, the population of Matsuyama was 116,543. Matsuyama experienced a decrease of -1,474 residents over the past year, marking an annual decline of -0.29%.These population estimates and projections come from the latest revision of the UN World Urbanization Prospects. These estimates represent the Urban agglomeration of Matsuyama, which typically includes Matsuyama's population in addition to adjacent suburban areas.