The city of Warri is an oil hub in South-South Nigeria and houses an annex of the Delta State Government House. It served as the colonial capital of the then Warri Province.

It shares boundaries with Sapele, although most of these places in Sapele, notably Okere, Agbassa, Uvwie, Okpe, and Udu have been integrated into the larger metropolitan area of Warri. Osubi houses an airport that serves 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 with Forçados River in the Southeast and Jameson Creek in the Southwest which later changed to Delta Province. Effurun serves as the gateway to and the economic nerve of the city.