The present Bhojpur came into existence in 1972. Earlier this district was part of old Sahabad district. In the year 1972 Sahabad district was bifurcated in two parts namely Bhojpur and Rohtas. Buxar was a subdivision of old Bhojpur district. In 1992, Buxar became a separate district and rest of Bhojpur district has now three sub-divisions – Ara Sadar,Jagdishpur and Piro. Ara town is the headquarters of the district and also its principal town.