| Total area | 540 km²World Bank WDI [2023] |
| Exclusive economic zone (EEZ) | No authoritative open source found |
| Administrative divisions (ADM1) | No authoritative open source found |
| Location | Oceania, island in the North Pacific Ocean, about three-quarters of the way from Hawaii to the PhilippinesCIA World Factbook [2025] · 2026 archive |
| Coastline | 125.5 kmCIA World Factbook [2025] · 2026 archive |
| Land boundaries | 0 kmCIA World Factbook [2025] · 2026 archive |
| Bordering countries | No authoritative open source found |
| Terrain | volcanic origin, surrounded by coral reefs; relatively flat coralline limestone plateau (source of most fresh water), with steep coastal cliffs and narrow coastal plains in north, low hills in center, mountains in southCIA World Factbook [2025] · 2026 archive |
| Climate | tropical marine; generally warm and humid, moderated by northeast trade winds; dry season (January to June), rainy season (July to December); little seasonal temperature variationCIA World Factbook [2025] · 2026 archive |
| Natural resources | aquatic wildlife (supporting tourism), fishing (largely undeveloped)CIA World Factbook [2025] · 2026 archive |
| Highest point | Mount Lamlam 406 mCIA World Factbook [2025] · 2026 archive |
| Lowest point | Pacific Ocean 0 mCIA World Factbook [2025] · 2026 archive |
| Mean elevation | No authoritative open source found |
| Area (comparative) | three times the size of Washington, D.C.CIA World Factbook [2025] · 2026 archive |
| Natural hazards | frequent squalls during rainy season; relatively rare but potentially destructive typhoons (June to December)CIA World Factbook [2025] · 2026 archive |
| Maritime claims | territorial sea: 12 nm; exclusive economic zone: 200 nmCIA World Factbook [2025] · 2026 archive |