Traduction de département
One of the three main administrative divisions in France. There are a hundred in all, four of which are overseas. Each is run by a conseil général, which has its headquarters in the principal town of the département.
Départements are numbered in alphabetical order (with a few exceptions in Île de France). The number is often used to refer to the department, particularly for the Paris area, and it is not uncommon to hear people say j'habite dans le 91 meaning j'habite dans l'Essonne.