Western State (Nigeria)

The former Western State of Nigeria was formed in 1967 when the Western Region was subdivided into the states of Lagos and Western State. Its capital was Ibadan, which was the capital of the old region.
In 1976 the state was subdivided into three new states, Ogun, Ondo and Oyo. The region now consist of nine states, across three geopolitical zones: Delta, Edo, Ekiti, Kwara, Lagos, Ogun, Ondo, Osun, and Oyo States.
Oyo State is the largest state in South West. It covers an area of 28,454km2
Lagos can be said to be the most prominent state with over 20million people residing therein