What is the Capital of Martinique? Fort-de-France by countryaah · Published June 2, 2019 · Updated October 30, 2020 Fort-de-France is the capital of the French overseas department of Martinique in the Caribbean and has 94,049 residents (1999). The city is located on the west coast of the island and is the French Caribbean’s largest city and most important port. Read more:What is the Capital of France? ParisCities and Towns in Fort Bend County, TexasMartinique AirportsMartinique FactsMartinique Flag and MeaningEmbassies of FranceFrance PopulationFrance AirportsFrance FactsFrance HolidaysWhere is France Located?France Major ExportsFrance Major Imports