North Dakota (USA) is 16 times larger than Jamaica.
Area: 10,991 km2 World Factbook
Population: 2,930,050 (July 2014) World Factbook
Jamaica is an island country situated in the Caribbean Sea, comprising the third-largest island of the Greater Antilles. Wikipedia
Area: 178,711 km2 US Census
Population: 723,393 (July 2013) US Census
North Dakota is the 39th state of the United States, having been admitted to the union on November 2, 1889. Wikipedia