Tehuacan's 2026 population is now estimated at 371,951. In 1950, the population of Tehuacan was 23,263. Tehuacan has grown by 5,003 in the last year, which represents a 1.36% 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 Tehuacan, which typically includes Tehuacan's population in addition to adjacent suburban areas.