For this reason, most of the total ten assembly constituencies falling in this district has been dominated by Koeris.

It has been recorded that in this district, the Koeri and Bhumihar castes are indulged in criminality, as they are politically strong.

[6] Samastipur district occupies an area of 2,904 square kilometres (1,121 sq mi),[2] comparatively equivalent to Indonesia's Muna Island.

[7] Samastipur is bounded on the north by the Bagmati River which forms part of the border with Darbhanga district.

In 2006 the Ministry of Panchayati Raj named Samastipur one of the country's 250 most backward districts (out of a total of 640).

[10] According to the 2011 census Samastipur district has a population of 4,261,566,[1] roughly equal to the Republic of the Congo[12] or the US state of Kentucky.