Dominica is 2.9 times larger than St. Kitts and Nevis.
Area: 751 km2 World Factbook
Population: 73,449 (July 2014) World Factbook
Dominica, officially the Commonwealth of Dominica, is an island nation in the Lesser Antilles region of the Caribbean Sea, south-southeast of Guadeloupe and northwest of Martinique. Wikipedia
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