Miramas is a commune in the Bouches-du-Rhône department, in the Provence-Alpes-Côte d'Azur region, southern France. It is the secon…Miramas is a commune in the Bouches-du-Rhône department, in the Provence-Alpes-Côte d'Azur region, southern France. It is the second-largest commune in metropolitan Ouest-Provence and is located at the north end of the Étang de Berre lagoon, adjacent to and northeast of the city of Istres. Miramas station has rail connections to Marseille, Avignon, Martigues and Arles.