East Kalimantan has a total area of and is the second least densely populated province in Kalimantan. The majority of the region shares a maritime border to the east with West Sulawesi and Central Sulawesi; its Cape Mangkalihat separates the Makassar Strait from the Celebes Sea. Its former northernmost region was split off in October 2012 and is now North Kalimantan Province; meanwhile it still shares land border to the west with West Kalimantan and Central Kalimantan Province; to its south, East Kalimantan borders the South Kalimantan province. The province bordered Sabah before the split, but still borders Sarawak.