Port Loko is the capital of Port Loko District and since 2017 the North West Province of Sierra Leone. The city had a population of 21,961 in the 2004 census and current estimate of 44,900. Port Loko lies approximately 57 km (35 mi) north-east of Freetown. The area in and around Port Loko is a major bauxite mining and trade centre. The town lies on the main highway linking Freetown to Guinea's capital Conakry. It also lies on the over-land highway between Freetown and its major airport, Lungi International Airport, although most travellers complete this journey via the much shorter ferry or helicopter transit.