Administrative divisions of Tonga
Tonga is divided into 5 first-level administrative divisions:
Largest cities in Tonga
| # | City | Population |
|---|---|---|
| 1 | Nuku'alofaCapital | 42,620 |
| 2 | Neiafu | 7,391 |
Nuku'alofa is the largest urban area in Tonga with about 42,620 people.
Terrain, rivers & lakes
Highest terrain in Tonga: ≈ 829 m — read from the global elevation model, so summit heights are approximate. The physical map paints elevation bands from green lowlands to brown highlands.
No major named rivers or lakes are mapped for Tonga at this map scale.
Ethnic groups in Tonga
Tongan 96.5%, other (European, Fijian, Samoan, Indian, Chinese, other Pacific Islander, other Asian, other) 3.5% (2021 est.)
Regionally, Tongan is the most common ethnic group across most of the 5 divisions.
Source: CIA World Factbook (2021 est.) · regional dominance compiled by Glostats from censuses and surveys
Religions in Tonga
Protestant 63.9% (Free Wesleyan Church 34.2%, Free Church of Tonga 11.3%, Church of Tonga 6.8%, Seventh Day Adventist 2.5%, Assembly of God 2.5%, Tokaikolo/Maamafo'ou 1.5%, Constitutional Church of Tonga 1.2%, other Protestant 4%), Church of Jesus Christ 19.7%, Roman Catholic 13.7%, other 2.1%, none 0.6%, no answer 0.1% (2021 est.)
Regionally, Protestant is the most common religious group across most of the 5 divisions.
Source: CIA World Factbook (2021 est.) · regional dominance compiled by Glostats from censuses and surveys
Languages in Tonga
Tongan only 85%, Tongan and other language 13.9%, Tongan not used at home 1.1% (2021 est.)
Regionally, Tongan only is the most common language group across most of the 5 divisions.
Source: CIA World Factbook (2021 est.) · regional dominance compiled by Glostats from censuses and surveys
Explore more
Sources: boundaries, cities, rivers and lakes from Natural Earth (public domain, 1:10m); elevation from the AWS Open Data terrain tiles (SRTM/GMTED); ethnic, religious and language shares from the CIA World Factbook; regional dominance compiled by Glostats from national censuses and surveys. Page generated 2026-10-19. More about our data.