According to a 2014 Population Reference Bureau report, the country’s population is growing at a rate of 2.6 percent annually. Lagos City in Lagos State is Nigeria’s largest city and its economic capital. Kano is the capital city of Kano State in northern Nigeria. Adapting to increasing numbers of people in the urban areas remains the biggest challenge for African cities. The Greater Cairo area has 8 overcrowded informal settlements and large population segments living under the international poverty level of living below $2 a day. The city’s population was recorded at 6.5 million according to preliminary data in 2014, but the number was later revised to 6.94 million. Figures for administrative areas are also given. Annually there are about 28.2 murders per 100,000 people in the city. 12% of the city's population over 15 years old has higher education compared to 8.1% in the rest of the country. Agriculture, growing population, and rapid urbanization are some of the factors increasing the water needs in Alexandria. Lagos City in Lagos State is Nigeria’s largest city and its economic capital. Although the DRC is mineral-rich, 64% of the population lives below the poverty line. Due to a shortage of accommodation facilities in the capital, hotel and rental charges are very high. Kano acts as a regional trade center that serves as a market for over 300 million people. The United States' Overseas Security Advisory Council (OSAC) gives it a crime rating of critical. In the slums, drug trafficking, prostitution, and Islamic radicalization occur posing a threat to Casablanca's tranquility as a whole. There are about 700,000 to a million people living in these slums lacking clean water and basic amenities. About 55 % of Angolans live on less than one U.S. dollar a day. As a result, ongoing rises in population in these cities is pressuring the infrastructure and diminishing the quality of living conditions. This city was founded as early as 969 AD, and it has a lot of histories related to it. In 2014, Bloomberg reported that the city’s population is expected to reach 8.1 million by 2040. Poverty is rife in the slums on the city’s periphery. Manufacturing, agribusiness, tourism, and technology are other avenues that anchor this city’s economy. Population: Lagos boasts of an estimated metro population of over 21 million people which is larger than the population of so many countries in Africa, especially northern Africa. Nairobi contributes 60% to Kenya’s GDP. It is heralded as the cradle of civilization. This reflects only cities located geographically in Africa including nearby islands. The First Somali Bank was the country's first bank. It has a population of 3.4 million. The average growth rate of Accra’s population from 2000 to 2010 was 3.1%. But petty crimes like pickpocketing or purse grabs happen. It has an estimated population of about 3.5 million residents of which 60% live in poverty. Figures are from the United Nations World Urbanization Prospects report, as well as from citypopulation.de. It is estimated to have a population of about 1.4 million people. The population grows at an annual rate of 2 to 3 %. Johannesburg is also a continental financial hub hosting major world banks and Africa’s largest stock in Sandton. It is located next to the Congo River. This port city has a population of about 4.3 million people. The city hosts the country’s busiest seaport off the Atlantic Ocean coast. Cairo is Egypt’s largest city and capital. Kinshasa (12,400,000) and Brazzaville (2,250,000), incl. Abidjan is Ivory Coast’s hub of industrialization and urbanization. Cairo is Egypt’s economic hub with two-thirds of the country’s GDP generated in the greater metropolitan section. Crime levels in Luanda are classified as critical by OSAC, with threats coming from gangs and cybercriminals. Kidnappings, extortion, carjacks, assaults, rapes, armed muggings, and burglaries are common in the city. Addis Ababa’s average annual GDP is $32.04 billion and is annually growing at an average rate of 12.18%. Lagos is a core financial center in Africa with the largest and busiest seaports on the continent. However, if you look at the population, then Lagos in Nigeria is the largest city in Africa with 21 million inhabitants.