Madhubani district is a part of Darbhanga Division. The district occupies an area of 3501 km² and has a population of 3,570,651 (as of 2001). This is the centre of Mithila, a region where the main language is Maithili. Madhubani became a district in 1976 when it was split from Darbhanga district. Madhubani district occupies an area of 3,501 square kilometres (1,352 sq mi), comparatively equivalent
to the Bahamas' North Andros Island. Bounded on the north by a hill region of Nepal and extending to the border of its parent district Darbhanga in the south, Sitamarhi in the west and Supaul in the east, Madhubani fairly represents the centre of the territory once known as Mithila and the district has maintained a distinct individuality of its own. Rivers:Kamala, Bhutahi Balaan, Bachharaja, Balaan, Tirsulla, Jeevachh.Kosi,Dhous, Ghaghra
The "Madhubani" style of paintings derives its name from this region as the style originated here, in the early 17th century. These paintings are made using vegetable dyes, lamp black, and the canvas is usually cloth or paper. Madhubani is also famous for Makhana and sweet water fish the smaller varities are also relished much. One more important thing is Saurath Sabha in which almost every year, during suddha or auspicious days for the settling of marriages, thousands of Maithil Brahmans gather at Sabha Gaachchi in Saurath.