A part of the Auradhapura District, Thantirimale spreads over 366 of the Mahavilachchiya Divisional Secretariat consisting of, Dematamagoda, Nelumvila, Sandamaleliya, Thuppitiyawa, Navodagama, mahaahatuwawa and Oyamaduwa Grama Niladhari Divisions.
This historical valley where the Malwatu Oya crosses the Kandara Oya, is bordered by the Malwatu Oy to the North and East,
Wilpattu National Wildlife Sanctuary to the West, and the Mahawilachchiya Main Road to the South.