Sudan covers about 1.886 million square kilometres in northeastern Africa, extending from the Sahara to the savanna belt and from the central Sahel to an approximately 853-kilometre Red Sea coastline. It borders Egypt and Libya to the north, Chad and the Central African Republic to the west, South Sudan to the south, and Ethiopia and Eritrea to the east. Khartoum, at the confluence of the Blue and White Nile, is the national capital and historically the principal administrative and commercial centre. The Nile flows north toward Egypt, while the Atbara joins it from the Ethiopian highlands. Broad plains dominate much of central Sudan; the Nubian Desert occupies the north, the Red Sea Hills rise in the east, the Nuba Mountains break the plains of South Kordofan, and volcanic Jebel Marra in Darfur reaches about 3,042 metres. This scale and physical variety make water, distance and access central constraints on settlement and transport.
Sudan’s climate changes sharply from north to south because the seasonal movement of the Intertropical Convergence Zone brings progressively longer and heavier summer rains toward lower latitudes. Long-term national averages conceal this gradient: FAO sources describe annual rainfall from roughly 25 millimetres in the extreme north to about 700 millimetres in the south, while the Jebel Marra highlands can receive substantially more because elevation intensifies local precipitation. Northern deserts experience very high daytime temperatures and little dependable rain; central regions are semi-arid, with a short wet season generally concentrated between June and September; southern borderlands and parts of Darfur and Kordofan support wetter savanna conditions. The Red Sea coast is humid but arid. Drought, erratic rainfall and land degradation affect farming and pastoral systems, while intense seasonal storms can produce destructive floods along river valleys and wadis. Climate variability therefore creates both scarcity and sudden excess, complicating water management, food production and rural livelihoods.
Ecologically, Sudan forms a transition from Saharan desert and semi-desert scrub through Sahelian grassland and acacia woodland to richer savanna in the south, with montane environments in Jebel Marra and the Nuba Mountains and coral-reef systems along the Red Sea. World Bank data put forest area at about 9.6 percent of land area in 2023, although definitions of forest and woodland vary. The Red Sea includes the Sanganeb Atoll and Dungonab Bay–Mukkawar Island marine protected areas, jointly inscribed by UNESCO for their coral reefs, seagrass, mangroves and marine biodiversity. Agriculture follows rainfall and river systems: sorghum, millet, sesame and groundnuts dominate large rain-fed areas, while Nile irrigation and the Gezira scheme support crops including wheat, cotton and vegetables. Livestock herding remains fundamental across drylands. Because cropland, grazing routes and seasonal water sources overlap, drought, displacement and expanding cultivation can intensify competition over land and make environmental management inseparable from rural livelihoods.
Human settlement along the middle Nile reaches deep into prehistory, and northern Sudan became one of northeastern Africa’s major centres of state formation. The Kingdom of Kerma flourished in Nubia during the second millennium BCE before Egyptian expansion incorporated parts of the region. Later, the Kushite state centred first on Napata and then Meroe developed a political and religious tradition linked to, but distinct from, pharaonic Egypt; UNESCO dates the Napatan phase roughly from the ninth to third centuries BCE and the Meroitic phase into the fourth century CE. After Meroe’s decline, Christian Nubian kingdoms including Nobatia, Makuria and Alodia controlled much of the Nile corridor for centuries. Islam and Arabic spread gradually through trade, migration, intermarriage and political change rather than through a single conquest. By the early modern period the Funj Sultanate of Sennar dominated much of the central Nile region, while the Darfur Sultanate developed as an important western state tied to trans-Saharan commerce. Ottoman-Egyptian forces conquered much of northern and central Sudan from 1820–21, imposing more centralized administration, taxation and intensified slave-raiding that reshaped political relations.
Resistance to Turco-Egyptian rule culminated in the Mahdist uprising from 1881, which established an independent state after the capture of Khartoum in 1885. Anglo-Egyptian forces defeated the Mahdist state at Omdurman in 1898, and from 1899 Sudan was governed under the Anglo-Egyptian Condominium, although British authority predominated. Colonial administration built railways, irrigation works and export agriculture while governing regions unevenly and reinforcing political and economic divisions that complicated later state-building. Sudan became independent on 1 January 1956, but civilian governments and military regimes alternated thereafter. The first north-south civil war ended with the 1972 Addis Ababa Agreement; renewed conflict from 1983 produced the 2005 Comprehensive Peace Agreement and South Sudan’s independence in 2011. Darfur had entered major conflict from 2003. A mass uprising ended Omar al-Bashir’s three-decade rule in 2019, but the transition was derailed by the October 2021 coup. War between the Sudanese Armed Forces and Rapid Support Forces began on 15 April 2023; by 2026 the army had retaken Khartoum while the RSF retained much of Darfur, leaving the state divided and the conflict unresolved.
Sudan’s economy reflects both its large agricultural base and repeated political shocks. Agriculture and livestock remain central to employment, food supply and rural incomes, while gold has become a major source of export earnings and foreign exchange. Sesame, livestock, gum arabic and other agricultural commodities are also important, and Port Sudan links these exports to Gulf and Asian markets. Oil once transformed public finances, but South Sudan’s 2011 secession removed most of the former unified state’s oil production; Sudan thereafter retained refining, pipeline and transit roles for some South Sudanese crude. The current war has damaged factories, banks, farms, markets and transport links and accelerated currency depreciation and informalization. The African Development Bank estimates that real GDP contracted by 13.5 percent in 2024 before a modest 1.2 percent rebound in 2025, while inflation remained about 150.2 percent in 2025. Localized agricultural recovery and gold production therefore coexist with destroyed capital, high import dependence, weak public revenue and severe household insecurity.
Sudan’s last national population census was conducted in 2008, when the territory corresponding to today’s Republic of Sudan recorded about 30.9 million people; no later full census has replaced it. United Nations-based World Bank estimates place the 2025 population at roughly 51.7 million, giving an average density of about 27 people per square kilometre. Settlement is much more concentrated than that average suggests. The Nile corridor, Khartoum metropolitan area, Gezira’s irrigated zone and several eastern, Darfur and Kordofan centres support dense populations, while the northern desert is extremely sparse. About 35 percent of the population was classified as urban in 2025, but wartime displacement has altered settlement patterns faster than conventional statistics can capture. Khartoum, Omdurman and Bahri form the dominant metropolitan system; other major cities include Port Sudan, Nyala, El Obeid, Kassala and Wad Medani. Sudan is divided into 18 states, although the war has sharply reduced the uniformity and practical reach of state institutions.
Arabic is the dominant language of national public life and the most widespread lingua franca, but Sudan is markedly multilingual. Nubian languages remain important along parts of the northern Nile; Beja languages are spoken in the east; Fur, Masalit, Zaghawa and other languages are used in Darfur; and the Nuba Mountains contain exceptional linguistic diversity. English retains a role in higher education and professional life. Islam is the majority religion, with Sunni traditions predominant and Sufi orders historically influential in social organization; Christian communities and followers of local religious traditions also form part of the country’s social landscape. Cultural identities often overlap rather than map neatly onto ethnic or linguistic categories. Sudanese literature, music and visual culture have developed through Nile Valley, Sahelian, Red Sea and Arab-world connections, while Nubian architecture, Islamic scholarship, oral poetry and the urban cultural institutions of Omdurman and Khartoum show how regional traditions have interacted within a shared but politically contested national space.
Transport and energy networks are extensive in outline but uneven in condition. A 2021 World Bank assessment counted about 12,316 kilometres in the national road network and roughly 4,578 kilometres of railway, with the main rail axis linking Port Sudan through Atbara to Khartoum and branches toward northern, central and western production centres. Roads carry most domestic freight, yet poor maintenance and limited feeder roads leave many rural areas seasonally isolated. Port Sudan is the principal maritime gateway for foreign trade and humanitarian imports, while Khartoum International Airport has gradually resumed activity after wartime damage; Port Sudan’s airport assumed much greater national importance during the conflict. Hydropower from Merowe, Roseires, Sennar and the Upper Atbara–Setit system supplies a major share of generation alongside thermal plants. World Bank data estimate electricity access at 66 percent in 2024, but that measure does not capture wartime outages, damaged grids and service collapse. Telecommunications are similarly essential but vulnerable to disruption.
Sudan’s wider importance comes from the intersection of the Nile Basin, the Red Sea, the Sahel and the Horn of Africa. Its river system directly links water politics with Ethiopia, South Sudan and Egypt; Port Sudan connects a large hinterland to Red Sea shipping; and pipelines across Sudan remain important to South Sudan’s oil exports. The country is a COMESA member and formally returned to IGAD engagement in February 2026 after suspending its participation during the war, while African Union, Arab League and United Nations diplomacy remain central to peace efforts. Geography also magnifies instability: refugee flows, arms movements, disrupted trade and food insecurity spread across neighboring states. Irrigable land, livestock, gold, Red Sea access and a large young population provide substantial economic potential, but medium-term recovery depends less on resource abundance than on restoring a legitimate national political settlement, functioning institutions, secure transport corridors and predictable access to water, energy and markets.
