Gopalganj district is one of the districts of Bihar. The district headquarters is located in the town of Gopalganj, and the district is a part of Saran Division. The district occupies an area of 2033 kmē and has a population of 2,149,343 (2001 census).
Gopalganj, which till 1875 was only a tiny hamlet, was made a subdivision of the old Saran district in the same year. It became an independent district on October 2, 1973. The old Saran district included the present districts of Saran, Siwan and Gopalganj
