Khagaria was a part of the district of Munger, as a subdivision.The sub-division of Khagaria was created in the Year 1943-44. It was upgraded as district, with effect from 10th May, 1981, vide Government of Bihar notification no. 7/T-1-207/79 dated 30th April,1981. As a sub-division of the old district of Munger, Khagaria was the youngest, in terms of creation of subdivision, before independence. The other three older subdivision were Munger sadar, Begusarai and Jamui. The Jamui sub-division was created on 22nd July,1864 and Begusarai sub-division on the 14th February 1870. Khagaria was created as a separate sub-division mainly because of the difficulties arising out of a lack of easy means of communications. Railways were a very old means of communication in this district.