Balochistan is geographically the largest of the four provinces at 347,190 km², but has the smallest population: approximately 6.3 million in 1994. The population density is very low due to the moutainous terrain and scarcity of water. The southern region is known as Makran. A region in the centre of the province is known as Kalat.
The capital city is Quetta, located in the most densly populated district in the northeast of the province. Quetta is situated in a river valley near the border with Afghanistan, with a road to Kandahar in the northwest.