Puerto Rico is an unincorporated territory of the United States, located in the northeastern Caribbean Sea, east of the Dominican Republic and west of the Virgin Islands.
Area
Total 9,104 km2 (169th)
Water (%) 1.6
Population
2010 estimate 3,725,789
Density 430/km2 (21st in the world; 2nd in U.S.)
1,113/sq mi