Jamaica The island of Jamaica is the third largest Caribbean island. It is in a group of islands called the greater antilles. It has an area of 10 991 km squared or 4 244 sq. miles. Jamaica spans 230 km east to west and from 80-36 from north to south. It is third only to Cuba, which is the largest, and Hispaniola which is the second largest island. Jamaica lies in the Caribbean sea which is a part of the much larger Atlantic ocean. The island is 960 km south of Florida, 160 km southwest of Haiti, and 140 km south of Cuba. Jamaica is mainly a mountainous island but there are 320 km of fine sandy beaches, swamps, moist fern- forests, sprawling open