Pertuis is a commune of the Vaucluse département, in Occitania, southern France. Located south of Luberon, this town of 20 000 people is also near Aix en Provence, a famous town. Petuis has existed since at least 981, while a castle was first built in the 12th century. It has registered significant population growth in the last 50 years, with a three fold increase during this period.