Kosi-Seemanchal

Kosi-Seemanchal
Subregion
Country India
StateBihar
RegionMithila
Largest cityPurnea and Katihar
DivisionsKosi and Purnia
Languages
 • OfficialHindi
 • Additional officialUrdu
 • RegionalMaithili (including Thēthi and Angika), Surjapuri, Bengali
Time zoneUTC+5:30 (IST)
Major highways NH 27, NH 31, NH 231, NH 131A, NH 131
Major Railway LinesBarauni-Katihar, Saharsa and Purnia sections
Barauni-Guwahati line

Kosi-Seemanchal is in the Northeastern part of Bihar. It is a subregion within the larger cultural region of Mithila.It consists of Kosi and Purnia divisions. It has seven districts — Araria, Madhepura, Saharsa, Supaul, Purnea, Kishanganj and Katihar. Supaul, Saharsa and Madhepura in Kosi Region and Purnia, Katihar, Araria and Kishanganj in seemanchal region.

Cities in Kosi–Seemanchal subregion with population over 1 lakh (Census 2011)
Rank City/Town District Population (2011) Remarks
1 Purnia (UA) Purnia 312,669 Urban Agglomeration
2 Katihar (UA) Katihar 240,838 Urban Agglomeration
3 Saharsa Saharsa 156,540 Municipality
4 Kishanganj Kishanganj 105,782 Nagar Parishad