Country: Puerto Rico.

Data code: RQ.

Language: Spanish.

Capital: San Juan.

Population: 3,944,259 (July 2007 est.).

Coastline: 501 km.

Area: total: 13,790 sq km, land: 8,870 sq km, water: 4,921 sq km.

Terrain: mostly mountains with coastal plain belt in north; mountains precipitous to sea on west coast; sandy beaches along most coastal areas.

Climate: tropical marine, mild; little seasonal temperature variation.