Bahrain is 13 times larger than Manhattan (NYC borough).
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: 59 km2 calculated
Manhattan is the most densely populated of the five boroughs of New York City. The borough is coterminous with New York County, an original county of the U.S. state of New York. Wikipedia