Katihar district is one of the thirty-eight districts of Bihar state in India, and Katihar city is the administrative headquarters of this district. The district is a part of Purnia Division. It is prominently known for its Katihar Junction Railway Station, which is a Category A1 station on the Barauni–Guwahati line. It has been included in the Aspirational Districts Program of the …Katihar district is one of the thirty-eight districts of Bihar state in India, and Katihar city is the administrative headquarters of this district. The district is a part of Purnia Division. It is prominently known for its Katihar Junction Railway Station, which is a Category A1 station on the Barauni–Guwahati line. It has been included in the Aspirational Districts Program of the Government of India since 2018, to improve its socio-economic indicators. Katihar is the largest maize producing district of Bihar in 2022.