Banke is bordered on the west by Bardiya district. Rapti zones Salyan and Dang Deukhuri Districts border to the north and east. To the south lies Uttar Pradesh, India; specifically Shravasti and Bahraich districts of Awadh. East of Nepalganj the international border follows the southern edge of the Dudhwa Range of the Siwaliks. There is no Nepalese Outer Terai in this part of Banke district.