The area is usually divided into five Barbagias: the Barbagia of Ollolai, the Barbagia of Seulo, the Barbagia of Belvì, the Mandrolisai, and finally the Barbagia Trigònia, the historical name by which the area of Ogliastra was once referred to. The latter two are named after a sub-region, and the others after their main villages.