| 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 | Southeastern Asia, island in the Indian Ocean, south of IndonesiaCIA World Factbook [2025] · 2026 archive |
| Coastline | 138.9 kmCIA World Factbook [2025] · 2026 archive |
| Land boundaries | 0 kmCIA World Factbook [2025] · 2026 archive |
| Bordering countries | No authoritative open source found |
| Terrain | steep cliffs along coast rise abruptly to central plateauCIA World Factbook [2025] · 2026 archive |
| Climate | tropical with a wet season (December to April) and dry season; heat and humidity moderated by trade windsCIA World Factbook [2025] · 2026 archive |
| Natural resources | phosphate, beachesCIA World Factbook [2025] · 2026 archive |
| Highest point | Murray Hill 361 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) | about three-quarters the size of Washington, D.C.CIA World Factbook [2025] · 2026 archive |
| Natural hazards | the narrow fringing reef surrounding the island can be a maritime hazardCIA World Factbook [2025] · 2026 archive |
| Maritime claims | territorial sea: 12 nm; contiguous zone: 12 nm; exclusive fishing zone: 200 nmCIA World Factbook [2025] · 2026 archive |