GrÃ asque is a commune of 3,705 people ( 2004 ) . It is found in the region Provence-Alpes-C Ã te d'Azur in the Bouches-du-Rh Ã ne department in the south of France .
GrÃ asque is a commune northeast of Marseille in the department of Bouches-du-Rh Ã ne in the Provence-Alpes-C Ã te d'Azur region in southern France .