Ubicación: Caribbean, island between the Caribbean Sea and the North Atlantic Ocean, east of the Dominican Republic
Coordenadas geográficas: 18° 15' N, 66° 30' W
Km de línea costera: 501 km km
Clima: tropical marine, mild; little seasonal temperature variation
Terreno: mostly mountains with coastal plain belt in north; mountains precipitous to sea on west coast; sandy beaches along most coastal areas
Cumbres: lowest point: Caribbean Sea 0 m highest point: Cerro de Punta 1,339 m
Riesgos naturales: periodic droughts; hurricanes
Moneda: US dollar (USD)
Población: 3,927,188 (July 2006 est.)
Lenguas: Spanish, English
Capital: San Juan
División administrativa: none (territory of the US with commonwealth status); there are no first-order administrative divisions, but there are 78 municipalities (municipios, singular - municipio) at the second order; Adjuntas, Aguada, Aguadilla, Aguas Buenas, Aibonito, Anasco, Arecibo, Arroyo, Barceloneta, Barranquitas, Bayamon, Cabo Rojo, Caguas, Camuy, Canovanas, Carolina, Catano, Cayey, Ceiba, Ciales, Cidra, Coamo, Comerio, Corozal, Culebra, Dorado, Fajardo, Florida, Guanica, Guayama, Guayanilla, Guaynabo, Gurabo, Hatillo, Hormigueros, Humacao, Isabela, Jayuya, Juana Diaz, Juncos, Lajas, Lares, Las Marias, Las Piedras, Loiza, Luquillo, Manati, Maricao, Maunabo, Mayaguez, Moca, Morovis, Naguabo, Naranjito, Orocovis, Patillas, Penuelas, Ponce, Quebradillas, Rincon, Rio Grande, Sabana Grande, Salinas, San German, San Juan, San Lorenzo, San Sebastian, Santa Isabel, Toa Alta, Toa Baja, Trujillo Alto, Utuado, Vega Alta, Vega Baja, Vieques, Villalba, Yabucoa, Yauco