Kogi State is a state in the North Central region of Nigeria, bordered to the west by the states of Ekiti and Kwara, to the north by the Federal Capital Territory, to the northeast by Nasarawa State, to the northwest by Niger State, to the southwest by the states of Edo and Ondo, to the southeast by the states of Anambra and Enugu, and to the east by Benue State. It is the only state in Nigeria to border ten other states. Named for the Hausa word for river, the state was formed from parts of Benue State, Niger State, and Kwara State on 27 August 1991. The state is nicknamed the "Confluence State" as the confluence of the River Niger and the River Benue occurs next to its capital, Lokoja.
Of the 36 states of Nigeria, Kogi is the thirteenth largest in area and twentieth most populous with an estimated population of about 4.5 million as of 2016. Geographically, the state is within the tropical Guinean forest–savanna mosaic ecoregion. Important geographic features include the key rivers with the Niger flowing from the northwest and the Benue coming from the northeast before the two rivers meet in Kogi's center and bisect the state southward.