Ọyọ State is an inland state

States of Nigeria

Nigeria is currently divided into 36 states and Abuja, the federal capital territory. The states are further divided into 774 Local Government Areas....

 in south-western Nigeria

Nigeria

Nigeria , officially the Federal Republic of Nigeria, is a federal constitutional republic comprising 36 states and its Federal Capital Territory, Abuja. The country is located in West Africa and shares land borders with the Republic of Benin in the west, Chad and Cameroon in the east, and Niger in...

, with its capital at Ibadan

Ibadan

Ibadan is the capital city of Oyo State and the third largest metropolitan area in Nigeria, after Lagos and Kano, with a population of 1,338,659 according to the 2006 census. Ibadan is also the largest metropolitan geographical area...

. It is bounded in the north by Kwara State

Kwara State

Kwara State is one of the 36 states of Nigeria. Its capital is Ilorin. The primary ethnic group of Kwara State is Yoruba, with significant Nupe, Bariba and Fulani minorities.- History :...

, in the east by Osun State

Osun State

Ọṣun State is an inland state in south-western Nigeria. Its capital is Osogbo. It is bounded in the north by Kwara State, in the east partly by Ekiti State and partly by Ondo State, in the south by Ogun State and in the west by Oyo State. The state's current governor is Rauf Aregbesola, who was...

, in the south by Ogun State

Ogun State

Ogun State is a state in South-western Nigeria. It borders Lagos State to the South, Oyo and Osun states to the North, Ondo State to the east and the republic of Benin to the west. Abeokuta is the capital and largest city in the state...

 and in the west partly by Ogun State and partly by the Republic of Benin

Republic of Benin

The short-lived Republic of Benin, in Nigeria's coastal Bight of Benin, was named after its capital Benin City. It was known as Mid-Western state in Nigeria until August 1967 when it was occupied by Biafra as its forces advanced towards Lagos...

.
Oyo State covers approximately an area of 28,454 square kilometers and is ranked 14th by size. The landscape consists of old hard rocks and dome shaped hills, which rise gently from about 500 meters in the southern part and reaching a height of about 1,219 metre above sea level in the northern part.