The French department of "Corse" (the entire island of Corsica) is divided into two: Haute-Corse (Upper Corsica) and Corse-du-Sud (Southern Corsica).

In the administrative divisions of France, the department is one of the three levels of government under the national level, between the administrative regions and the communes. There are a total of 101 departments, consisting of ninety-six departments in metropolitan France, and five overseas departments, which are also classified as overseas regions. Departments are further subdivided into 333 arrondissements and 2,054 cantons. These last two levels of government have no political autonomy, instead serving as the administrative basis for the local organisation of police, fire departments, and, in certain cases, elections.

Corsica is an island in the Mediterranean Sea and one of the 18 regions of France. It is the fourth-largest island in the Mediterranean and lies southeast of the French mainland, west of the Italian Peninsula and immediately north of the Italian island of Sardinia, the nearest land mass. A single chain of mountains makes up two-thirds of the island. As of January 2024, it had a population of 355,528.

Haute-Corse is a department of France, consisting of the northern part of the island of Corsica. The corresponding departmental territorial collectivity merged with that of Corse-du-Sud on 1 January 2018, forming the single territorial collectivity of Corsica, with territorial elections coinciding with the dissolution of the separate councils. However, even though its administrative powers were ceded to the new territorial collectivity, it continues to remain an administrative department in its own right. In 2019, it had a population of 181,933.

Corse-du-Sud is an administrative department of France, consisting of the southern part of the island of Corsica. The corresponding departmental territorial collectivity merged with that of Haute-Corse on 1 January 2018, forming the single territorial collectivity of Corsica, with territorial elections coinciding with the dissolution of the separate council. Although its administrative powers were ceded to the new territorial collectivity, it remains an administrative department in its own right. In 2019, it had a population of 158,507.