Kenya, officially the Republic of Kenya (Swahili: Jamhuri ya Kenya), is a country in Eastern Africa. At 580,367 square kilometres (224,081 sq mi), Kenya is the world’s 48th largest country by total area. With a population of more than 47.6 million people, Kenya is the 29th most populous country. Kenya’s capital and largest city is Nairobi, while its oldest city and first capital is the coastal city of Mombasa. Kisumu City is the third largest city and also an inland port on Lake Victoria. Other important urban centres include Nakuru and Eldoret. As of 2020, Kenya is the third largest economy in sub-Saharan Africa after Nigeria and South Africa. Kenya is bordered by South Sudan to the northwest, Ethiopia to the north, Somalia to the east, Uganda to the west, Tanzania to the south, and the Indian Ocean to the southeast.
Nairobi (/naɪˈroʊbi/) is the capital and the largest city of Kenya. The name comes from the Maasai phrase Enkare Nairobi, which translates to “cool water”, a reference to the Nairobi River which flows through the city. The city proper had a population of 4,397,073 in the 2019 census, while the metropolitan area has a population of 9,354,580. The city is popularly referred to as the Green City in the Sun.
Nairobi was founded in 1899 by the colonial authorities in British East Africa, as a rail depot on the Uganda Railway. The town quickly grew to replace Mombasa as the capital of Kenya in 1907. After independence in 1963, Nairobi became the capital of the Republic of Kenya. During Kenya’s colonial period, the city became a centre for the colony’s coffee, tea and sisal industry. The city lies in the south central part of Kenya, at an elevation of 1,795 metres (5,889 ft).
According to the 2019 census, in the administrative area of Nairobi, 4,397,073 inhabitants lived within 696 km2 (269 sq mi).
Home to thousands of Kenyan businesses and over 100 major international companies and organizations, including the United Nations Environment Programme (UN Environment) and the United Nations Office at Nairobi (UNON), Nairobi is an established hub for business and culture. The Nairobi Securities Exchange (NSE) is one of the largest in Africa and the second-oldest exchange on the continent. It is Africa’s fourth-largest exchange in terms of trading volume, capable of making 10 million trades a day. It also has the Nairobi National Park with a large game reserve.