Hisar's 2021 population is now estimated at 359,458. In 1950, the population of Hisar was 34,808. Hisar has grown by 5,599 since 2015, which represents a 1.58% 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 Hisar, which typically includes Hisar's population in addition to adjacent suburban areas.