Jamaica is 2.1 times larger than Trinidad and Tobago.
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: 5,128 km2 World Factbook
Population: 1,223,916 (July 2014) World Factbook
Trinidad and Tobago, officially the Republic of Trinidad and Tobago, is a twin island country off the northern edge of South America, lying just off the coast of northeastern Venezuela and south of Grenada in the Lesser Antilles. Wikipedia