Thoothukkudi's 2021 population is now estimated at 577,945. In 1950, the population of Thoothukkudi was 97,117. Thoothukkudi has grown by 17,015 since 2015, which represents a 3.03% 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 Thoothukkudi, which typically includes Thoothukkudi's population in addition to adjacent suburban areas.