IntroductionPuerto Rico (pwārˈtō rēˈkō) [key], island (2005 est. pop. 3,917,000), 3,508 sq mi (9,086 sq km), West Indies, c.1,000 mi (1,610 km) SE of Miami, Fla. Officially known as the Commonwealth of Puerto Rico (a self-governing entity in association with the United States), it includes the offshore islands of Mona, Vieques, and Culebra. The capital and largest city is San Juan.
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