Saptari, is Located in the easternmost part of Madhesh Province, is one of the seventy-seven districts of Nepal. Its district headquarter is Rajbira…Saptari, is Located in the easternmost part of Madhesh Province, is one of the seventy-seven districts of Nepal. Its district headquarter is Rajbiraj. Saptari is an Outer Terai district. This district covers an area of 1,363 km² and has a population of 706,255 which makes it the 14th most populated district of Nepal. Saptari is renowned for its agricultural output, and is bordered on the east by the massive Sapta Koshi river, on the west by the Balan River separating Siraha district, on the north by Udayapur and on the south by Supaul and Madhubani districts of Bharat Vihar.