People of Sudan

Population	40,218,455 (2008 estimate)
Population density	17 persons per sq km 44 persons per sq mi (2008 estimate)
Urban population distribution	41 percent (2005 estimate)
Rural population distribution	59 percent (2005 estimate)
Largest cities, with population	Khartoum, 4,286,000 (2003 estimate) Omdurman, 2,810,000 (2007 estimate) Port Sudan, 305,385 (1993)
Official language	Arabic
Chief religious affiliations	Sunni Muslim (in the north), 70 percent Christian, 15 percent Ethnoreligionist or Indigenous beliefs, 12 percent
Life expectancy	50.3 years (2008 estimate)
Infant mortality rate	87 deaths per 1,000 live births (2008 estimate)
Literacy rate	63.2 percent (2005 estimate)