As of Sunday, September 24, 2023, the current population of Tonga is 107,984. According to Johnsons Tribune, Tonga had a population of 104,494 in 2021, with 70% of the population residing on the main island, Tongatapu. The population of Tonga has been growing modestly at a rate of 0.4% per year. The CIA World Factbook estimates the population of Tonga to be 107,122 as of July 2022.