Aube is a French department in the Grand Est region of north-eastern France. As with sixty departments in France, this department is nameā¦Aube is a French department in the Grand Est region of north-eastern France. As with sixty departments in France, this department is named after a river: the Aube. With 310,242 inhabitants, Aube is the 74th department in terms of population. The inhabitants of the department are known as Aubois or Auboises.