| 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 | Caribbean, island in the Caribbean Sea, 30 nm west of Tiburon Peninsula of HaitiCIA World Factbook [2025] · 2026 archive |
| Coastline | 8 kmCIA World Factbook [2025] · 2026 archive |
| Land boundaries | 0 kmCIA World Factbook [2025] · 2026 archive |
| Bordering countries | No authoritative open source found |
| Terrain | raised flat to undulating coral and limestone plateau; ringed by vertical white cliffs (9 to 15 m high)CIA World Factbook [2025] · 2026 archive |
| Climate | marine, tropicalCIA World Factbook [2025] · 2026 archive |
| Natural resources | guano (mining discontinued in 1898)CIA World Factbook [2025] · 2026 archive |
| Highest point | 200 m NNW of lighthouse 85 mCIA World Factbook [2025] · 2026 archive |
| Lowest point | Caribbean Sea 0 mCIA World Factbook [2025] · 2026 archive |
| Mean elevation | No authoritative open source found |
| Area (comparative) | about nine times the size of the National Mall in Washington, D.C.CIA World Factbook [2025] · 2026 archive |
| Natural hazards | hurricanesCIA World Factbook [2025] · 2026 archive |
| Maritime claims | territorial sea: 12 nm; exclusive economic zone: 200 nmCIA World Factbook [2025] · 2026 archive |