Rhode Island (USA) is 10 times larger than St. Kitts and Nevis.
Area: 261 km2 World Factbook
Population: 51,538 (July 2014) World Factbook
The Federation of Saint Christopher and Nevis, located in the Leeward Islands, is a federal two-island country in the West Indies. It is the smallest sovereign state in the Americas, in both area and population. Wikipedia
Rhode Island, officially the State of Rhode Island and Providence Plantations, is a state in the New England region of the United States. Rhode Island is the smallest in area, the eighth least populous, but the second most densely populated of the 50 US states behind New Jersey. Wikipedia