Fun fact 5 about Tongatapu

Tongatapu is the main island of Tonga and the site of its capital, Nukuʻalofa. Approximately 260 square kilometres in size, it is located in Tonga's southern island group, to which it gives its name and it is the country's most populous island, with 74,611 residents (2016) or roughly 70.5% of the total population.

From the “Main sites” section