Bo, also commonly referred to as Bo Town, is the second largest city in Sierra Leone by landscape/geographical location (after Freetown) and the largest city in the Southern Province. Bo is the capital and administrative centre of Bo District. The city of Bo had a population of 149,957 in the 2004 census and had a population of about 233,684 based on 2017 estimate. Bo is an urban centre, and lies approximately 160 miles (250 km) eastsoutheast of Freetown, and about 40 miles (71 km) to Kenema. Bo is the leading financial, educational and economic centre of southern Sierra Leone. The city of Bo is one of Sierra Leone's six municipalities and is locally governed by a directly elected city council, known as the Bo City Council, headed by a mayor. The Mayor and members of the Bo City Council are directly elected every four years in a municipal election. The current mayor of Bo is Harold Logie Tucker of the Sierra Leone People's Party, who was elected mayor with 69.7% of the votes in the 2012 Bo Mayoral election. The city is the primary home of Njala University, the second largest university in Sierra Leone, after the Fourah Bay College. Bo is also home to the Bo Government Secondary School, commonly known as Bo School, which is one of the biggest and most prominent secondary schools in West Africa. The school has a history of producing some of Sierra Leone's most gifted students. The city is home to the Bo Stadium, the second largest stadium in Sierra Leone, and is mostly used for football matches. Bo is one of the most ethnically diverse cities in Sierra Leone. The city is home to a significant population of many of Sierra Leone's ethnic groups, with no single ethnic group forming a majority. Bo is the principal home of the Mende people, who form the plurality of the city's population. As with most parts of Sierra Leone, the Krio language of the Sierra Leone Creole people is by far the most widely spoken language in Bo and is the primary means of communication in the city. The city's population is religiously diverse, primarily among Muslims and Christians. History Bo began its modern development with the coming of the Sierra Leone Government Railway in 1889 and became an educational centre in 1906, when the Bo Government Secondary School was established. From 1930 until independence