Weihai's 2021 population is now estimated at 1,347,865. In 1950, the population of Weihai was 43,379. Weihai has grown by 43,550 since 2015, which represents a 3.34% 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 Weihai, which typically includes Weihai's population in addition to adjacent suburban areas.