Katihar district is one of the districts of Bihar, and and Katihar town is the administrative headquarters of this district. The district is a part of Purnia Division. The district occupies an area of 3056 kmē and has a population of 2,389,533 (2001 census). Katihar is a famous Railway Junction. Train coming directly from New Delhi, Jammu, Amritsar, Patna, Sialdah, Dadar, Barauni, Guwahati, New Jalpaiguri, Maldah, Jogbani & all other major stations.
Katihar became an independent district on October 2, 1973, before which it was a sub-division in the old Purnia district. The district suffered an earthquake in 1897.