Aix-en-Provence, or simply Aix, is a city and commune in southern France, about 30 km north of Marseille. A former capital of Provence, it is the subprefecture of the arrondissement of Aix-en-Provence, in the department of Bouches-du-Rhône, in the region of Provence-Alpes-Côte d'Azur. The population of Aix-en-Provence is of approximately 143,000. Its inhabitants are called Aixois or, less commonly, Aquisextains.