The city of Warri is the most popular city in Delta state. It shares boundaries with Udu, Sapele, Okpe, Uvwie, and Ughelli/Agbarho although most of these places, notably Udu, Okpe and Uvwie, have been integrated to the larger metropolitan Warri. Osubi houses an airport that serves the city. Effurun serves as the gateway to and the economic nerve of the city.
The name Warri province was once applicable to the part of an area now called Delta State under the Colony and Protectorate of Southern Nigeria. Its boundary in the Northeast was Sapele/Udu creek near Ughelli and Aboh, with Forçados River in the Southeast and Jameson Creek in the Southwest which later changed to Delta Province. Warri city is one of the major hubs of petroleum activities and businesses in the southern Nigeria. It is a commercial capital city of Delta State, with a population of over 311,970 people according to the national population census figures for 2006. The city is one of cosmopolitan cities in southern Nigeria comprising originally of the Urhobo and Ijaw People.Warri is predominantly Christian with mixture of African traditional religions like most of the Southern Nigeria. The city is known nationwide for its unique Pidgin English.