Almost all Dominicans are descendants of African slaves brought in by colonial planters in the 18th century. Dominica is the only island in the eastern Caribbean to retain some of its pre-Columbian population--the Carib Indians--about 3,000 of whom live on the island's east coast. The population growth rate is very low, due primarily to emigration to more prosperous Caribbean Islands, the United Kingdom, the United States, and Canada.

English is the official language; however, because of historic French domination, the most widely spoken dialect is a French patois. About 80% of the population is Catholic. In recent years, a number of Protestant churches have been established.