Population of Tonga
As of May 2025, the population of Tonga is 109.4 thousand. The number of inhabitants has increased by 918 in the last year, representing a growth of 0.84%. The median age of the population has increased in recent years, rising from 20.7 years in 2015 to 22.2 years in 2025. Currently, life expectancy at birth is 71.7 years and population density is 168.6 inhabitants per square kilometer.
Population Growth
The population growth rate of Tonga peaked in 1956, reaching around 3.28% annually, but has since declined to approximately 0.84% in 2025. The annual increase in the number of people has also decreased from a peak of around 2.16 thousand in 1965 to nearly 918 in 2025.
Life Expectancy
In Tonga, life expectancy at birth has been increasing, with the indicator rising from 69.8 years in 2005 to 71.7 years in 2025, representing an increase of almost 2 years over the past 2 decades.
Most populous cities in Tonga
The cities of Tonga are small, with the 5 most populated adding up to around 41.1 thousand inhabitants. The most populous city is Nuku‘alofa, Tongatapu, con una diferencia significativa sobre las demás, alcanzando approximately 22.4 thousand inhabitants. It is followed by Lapaha, Tongatapu with 8 thousand and Neiafu, Vava‘u with 4.3 thousand.
These are the 14 most populous cities in Tonga:
| # | City | Population |
|---|---|---|
| 1 | Nuku‘alofa, Tongatapu | 22,400 |
| 2 | Lapaha, Tongatapu | 8,000 |
| 3 | Neiafu, Vava‘u | 4,320 |
| 4 | Haveluloto, Tongatapu | 3,417 |
| 5 | Tatakamotonga, Tongatapu | 3,000 |
| 6 | Vaini, Tongatapu | 2,976 |
| 7 | Houma, Tongatapu | 2,086 |
| # | City | Population |
|---|---|---|
| 8 | Fangale’ounga, Ha‘apai | 2,016 |
| 9 | Pangai, Ha‘apai | 1,738 |
| 10 | ‘Ohonua, ʻEua | 1,241 |
| 11 | Kolonga, Tongatapu | 1,100 |
| 12 | Hihifo, Niuas | 815 |
| 13 | Niutoua, Tongatapu | 671 |
| 14 | Malapo, Tongatapu | 647 |