Tristan da Cunha is part of <answer>the British overseas territory of Saint Helena</answer>, Ascension and Tristan da Cunha. This includes Saint Helena and equatorial Ascension Island some 3,730 kilometres (2,318 mi) to the north of Tristan. The island has a population of 267 as of January 2016.
what territory is Tristan da Cunha part of?
the British overseas territory of Saint Helena