Aix-en-Provence [] (Provençal Occitan: Ais de Provença in classical norm, or Ais de Prouvènço in Mistralian norm, , ), or simply Aix (; medieval Occitan Aics), is a city-commune in the south of France, about north of Marseille. It is in the region of Provence-Alpes-Côte d'Azur, in the department of Bouches-du-Rhône, of which it is a subprefecture. The population of Aix numbers approximately 143,000. Its inhabitants are called Aixois or, less commonly, Aquisextains.