How a single Republic spans the globe through complex layers of territory

Design · Published 19 October 2026 · Updated 23 October 2026 Swipe more like this →

In short: From the streets of Paris to the Indian Ocean, France is far more than a European nation. Its administrative architecture is a dense, multi-layered web of regions, departments, and unique collectivities that manage everything from local garbage collection to international diplomacy.

The French Republic is organized into a hierarchy of political, electoral, and administrative divisions. At the highest level, the nation comprises 18 regions: 12 located in mainland Europe and 6 overseas. These are split between metropolitan regions and overseas regions, such as Guadeloupe, Martinique, French Guiana, Mayotte, and Réunion, all of which hold the same status and represent the most integrated parts of the Republic.

In metropolitan France, the structure descends from 13 regions (including the territorial collectivity of Corsica) into 96 departments. These departments are further subdivided into 3 and 20 arrondissements, 1,995 cantons, and 34,826 communes. Large cities like Paris, Marseille, and Lyon possess additional complexity; for instance, Paris is divided into 20 municipal arrondissements, while Marseille contains 16 arrondissements and 8 municipal sectors.

The overseas territories introduce unique legal nuances. Some, like the overseas departments, share the same status as mainland departments. Others, known as overseas collectivities (COM), possess semi-autonomous status. For example, French Polynesia is divided into five administrative subdivisions, while Saint Barthélemy and Saint Martin are unique for having no commune structure. Even more distinct is New Caledonia, a 'sui generis' collectivity with the power to pass specific laws without seeking central government consent, a status reinforced by the 1998 Nouméa Accord.

Responsibility for these territories is shared. While the national government manages military, foreign policy, and justice, the lower tiers handle local needs. Regions oversee high schools and public transit, departments manage junior high schools and social welfare, and communes are responsible for vital records, water management, and local policing.

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