| Total area | No authoritative open source found |
| Exclusive economic zone (EEZ) | No authoritative open source found |
| Administrative divisions (ADM1) | No authoritative open source found |
| Location | archipelago in the Indian Ocean, south of India, about halfway between Africa and IndonesiaCIA World Factbook [2025] · 2026 archive |
| Coastline | 698 kmCIA World Factbook [2025] · 2026 archive |
| Land boundaries | 0 kmCIA World Factbook [2025] · 2026 archive |
| Bordering countries | No authoritative open source found |
| Terrain | flat and low coral atolls (most areas do not exceed 2 m, or 6.6 ft, in elevation); sits atop the submarine volcanic Chagos-Laccadive RidgeCIA World Factbook [2025] · 2026 archive |
| Climate | tropical marine; hot, humid, moderated by trade windsCIA World Factbook [2025] · 2026 archive |
| Natural resources | coconuts, fish, sugarcaneCIA World Factbook [2025] · 2026 archive |
| Highest point | ocean-side dunes on Diego Garcia 9 mCIA World Factbook [2025] · 2026 archive |
| Lowest point | Indian Ocean 0 mCIA World Factbook [2025] · 2026 archive |
| Mean elevation | No authoritative open source found |
| Area (comparative) | land area is about one-third the size of Washington, D.C.CIA World Factbook [2025] · 2026 archive |
| Natural hazards | none; located outside routes of Indian Ocean cyclonesCIA World Factbook [2025] · 2026 archive |
| Maritime claims | territorial sea: 12 nm; Environment (Protection and Preservation) Zone: 200 nmCIA World Factbook [2025] · 2026 archive |