is located in the centre of the country. The region covers about 412,000 km² of area, and the population is 5,455,363 (2004), making the region the second largest in the Kingdom in terms of both area and population.
The capital of the region is the city of Riyadh, which is also the national capital.
More than 75% of the population of the region resides in Riyadh. According to the 2004 census, 1,728,840 of them are non-Saudis (approximately 31%), with 1,444,500 of those living within the provincial capital, Riyadh.
The region emirate was established in 1319 H., after the unification of the Kingdom as the first emirate in the Kingdom, and it is linked to Interior Ministry.