| Location | Oceania, island in the North Pacific Ocean, about three-quarters of the way from Hawaii to the Philippines |
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| Geographic coordinates | 13 28 N, 144 47 E |
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| Zone | Oceania |
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| Area | total: 541.3 sq km
land: 541.3 sq km
water: 0 sq km |
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| Land boundaries | 0 km |
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| Coastline | 125.5 km |
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| Maritime claims | territorial sea: 12 nm
exclusive economic zone: 200 nm |
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| 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 variation |
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| 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 south |
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| Elevation extremes | lowest point: Pacific Ocean 0 m
highest point: Mount Lamlam 406 m |
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| Natural resources | fishing (largely undeveloped), tourism (especially from Japan) |
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| Irrigated land | 125.5 km |
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| Natural hazards | frequent squalls during rainy season; relatively rare, but potentially very destructive typhoons (June - December) |
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Environment -
current issues | extirpation of native bird population by the rapid proliferation of the brown tree snake, an exotic, invasive species |
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| Geography - note | largest and southernmost island in the Mariana Islands archipelago; strategic location in western North Pacific Ocean |
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