Sanming's 2025 population is now estimated at 402,463. In 1950, the population of Sanming was 31,682. Sanming has grown by 6,325 in the last year, which represents a 1.6% 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 Sanming, which typically includes Sanming's population in addition to adjacent suburban areas.