This common Martinique is located southwest of the island of Martinique on the Diamond Peninsula and overlooks the bay of Fort-de-France; it is crossed by the road of Anses. It can be reached by boat from Fort-de-France. Many shuttles make the crossing of the bay.
The city of Trois-Ilets is spread over four relatively remote urban areas:
Le Bourg, where are the administrative buildings and the main church,
Anse Mitan (middle beach),
Pointe du Bout (peninsula),
Anse à l'Âne.