Puerto Rico is 18 times larger than Bahrain.
Area: 760 km2 World Factbook
Population: 1,314,089 (July 2014) World Factbook
Bahrain, officially the Kingdom of Bahrain is a small island country situated near the western shores of the Persian Gulf. It is an archipelago with Bahrain Island, the largest land mass, at 55 km long by 18 km wide. Wikipedia
Area: 13,790 km2 World Factbook
Population: 3,620,897 (July 2014) World Factbook
Puerto Rico, officially the Commonwealth of Puerto Rico, is an unincorporated territory of the United States, located in the northeastern Caribbean east of the Dominican Republic and west of both the United States Virgin Islands and the British Virgin Islands. Wikipedia