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Flag of British Indian Ocean Territory

British Indian Ocean Territory

Territoryof United Kingdom

British Overseas Territory. Mauritius claims sovereignty. The United Kingdom and Mauritius signed a treaty in May 2025 to transfer sovereignty, but ratification stalled in 2026 and the treaty had not entered into force by October 2026.[1][2][3] Draft, not yet reviewed

Capital
Population
3,000 in 2018[5]
Total area
60 km²[6] land and water
Official language
Currencies
Coast
Yes[11]
Continent
Official names
  • British Indian Ocean Territory[12]
  • Britské indickooceánske územie[13]

Learn more

Codes

ISO alpha-2
IO[14]
ISO alpha-3
IOT[15]
ISO numeric
086[16]

Changes to this page's data

No changes recorded since the dataset of 5 November 2026.

Sources

  1. Wikipedia: British Indian Ocean Territory Written by this project from the cited sources.
  2. Wikipedia: British Overseas Territories Written by this project from the cited sources.
  3. Wikipedia: Chagos Archipelago sovereignty dispute Written by this project from the cited sources.
  4. Wikidata: British Indian Ocean Territory (Q43448), capital: Diego Garcia (revision 2560417775) Wikidata statement that does not cite a source yet.
  5. Wikidata: British Indian Ocean Territory (Q43448), population (revision 2560417775) Wikidata statement that cites its own sources.
  6. Wikidata: British Indian Ocean Territory (Q43448), area (revision 2560417775) Wikidata statement that does not cite a source yet.
  7. Wikidata: British Indian Ocean Territory (Q43448), official language: English (revision 2560417775) Wikidata statement that does not cite a source yet.
  8. Wikidata: British Indian Ocean Territory (Q43448), currency: United States dollar (revision 2560417775) Wikidata statement that does not cite a source yet.
  9. Wikidata: British Indian Ocean Territory (Q43448), currency: pound sterling (revision 2560417775) Wikidata statement that does not cite a source yet.
  10. Wikidata: British Indian Ocean Territory (Q43448), continent: Africa (revision 2560417775) Wikidata statement that does not cite a source yet.
  11. Natural Earth: Admin 0 countries, 1:50m (revision v5.1.2) Published directly by the source.
  12. Wikidata: British Indian Ocean Territory (Q43448), official name (revision 2560417775) Wikidata statement that does not cite a source yet.
  13. Wikidata: British Indian Ocean Territory (Q43448), official name (revision 2560417775) Wikidata statement that cites its own sources.
  14. Wikidata: British Indian Ocean Territory (Q43448), ISO 3166-1 alpha-2 code (revision 2560417775) Wikidata statement that does not cite a source yet.
  15. Wikidata: British Indian Ocean Territory (Q43448), ISO 3166-1 alpha-3 code (revision 2560417775) Wikidata statement that does not cite a source yet.
  16. Wikidata: British Indian Ocean Territory (Q43448), ISO 3166-1 numeric code (revision 2560417775) Wikidata statement that does not cite a source yet.

Flag image: Flag of the Commissioner of the British Indian Ocean Territory.svg, CC0, Unknown author Unknown author, via Wikimedia Commons.