The Archdiocese is located in the ever-sprawling city of Ibadan, the capital of Oyo State, Nigeria, with a conservatively approximated population of 7.5 million. Ibadan is the largest city in the world inhabited by the black race, but it is the Capital City of the Yoruba people of the Western Nigeria. The strategic location of the city attracts many Nigerians for commercial and industrial activities.

Government structures and infrastructures are located in Ibadan, being the capital of the old Western Region. Such structures and infrastructures include Health and Educational Institutions/Structures like the University College Teaching Hospital (UCH), the University of Ibadan, International Institute of Tropical Agriculture (IITA), Nigeria Prison Service and so many others. Some basic social amenities were also provided and functional since the Independence of Nigeria on October 1st, 1960.