The district lay between the Arabian Sea on the west, South Canara District on the north, the Western Ghats (the princely states of Coorg and Mysore, and Nilgiris and Coimbatore districts) to the east, and the princely state of Cochin to the south. The district covered an area of 15,027 square kilometres (5,802 sq mi), and extended 233 km (145 mi) along the coast and 40–120 kilometers (25–75 miles) inland. The name Mala-bar means the "hillside slopes".