Aix-en-Provence (Aquae Sextiae) (French pronunciation: ​[ɛksɑ̃pʀovɑ̃s]; Provençal Occitan: Ais de Provença in classical norm, or Ais de Prouvènço in Mistralian norm, pronounced [ˈajz de pʀuˈvɛⁿsɔ]), or simply Aix (pronounced: [ɛks]; medieval Occitan Aics), is a city-commune in south of France, about 30 km (19 mi) north of Marseille. It is in the region of Provence-Alpes-Côte d'Azur, in the département 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.