Arwal district is one of the thirty-eight districts of Bihar state, India, and Arwal town is the administrative headquarters of this district. It was earlier part of Jehanabad district. Arwal has a population of 588,000. It's headquarter is situated at Arwal which is approximately 80 km south from the state capital Patna. Arwal town is situated on the right side bank of the river Son, which is a tributary to the river Ganges.

Administration
Arwal district is a part of Magadh division. It came into existence in September 2001 and was earlier part of Jehanabad district.

The five block divisions are Arwal, Kaler, Karpi, Kurtha and Suryapur Vanshi.

Transport
Nearest airport is at Patna and railway station is at Jehanabad. By road, Arwal is linked with Jehanabad, Patna and Aurangabad.

Economy
Economy of the district is totally agriculture Based and this area does not have any presence of any Industry. Paddy, wheat and maize are the main crops. Though most of the area of the district is well irrigated but due to lack of infrastructure and power- farmers are not benefitted.