Tirunelveli's 2025 population is now estimated at 616,444. In 1950, the population of Tirunelveli was 158,813. Tirunelveli has grown by 12,053 in the last year, which represents a 1.99% 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 Tirunelveli, which typically includes Tirunelveli's population in addition to adjacent suburban areas.