List of Nigerian states by population in the context of "Edo State"

Lagos State (Yoruba: Ìpínlẹ̀ Èkó, Gun: Ayìmátẹ̀n Awọnlìn tọ̀n) is a state in southwestern Nigeria. Of the 36 states, Lagos is the most populous state but has the smallest landmass in Nigeria. Bounded to the south by the Bight of Benin and to the west by the international border with the Republic of Benin, Lagos State borders Ogun State to the north and east, making it the only Nigerian state to border only one other state. Named for the city of Lagos — the most populous city in Africa — the state was formed from the Western Region and the former Federal Capital Territory on 27 May 1967.

Geographically, Lagos State is dominated by bodies of water with nearly a quarter of the state's area being lagoons, creeks, and rivers. The largest of these bodies are the Lagos and Lekki lagoons in the state's interior with the Ogun and Osun rivers flowing into them. Many other rivers and creeks flow throughout the state and serve as vital means of transportation for people and goods. On land, non-urbanized areas are within the tropical Nigerian lowland forests ecoregion with natural areas containing threatened populations of mona monkey, tree pangolin, and hooded vulture along with a transitory population of African forest elephants. Offshore, the state is also biodiverse as there are large fish populations along with African manatees and crocodiles.

Kaduna (Hausa: Jihar Kaduna, جىِهَر كَدُنا; مدينة كدونا; Fula: Leydi Kaduna, 𞤤𞤫𞤴𞤣𞤭 𞤳𞤢𞤣𞤵𞤲𞤢; Tyap: Si̱tet Ka̱duna) is a state in the northwest geopolitical zone of Nigeria. The state capital is its namesake, the city of Kaduna, which was the 8th largest city in the country as of 2006. Created in 1967 as North-Central State, which also encompassed the modern Katsina State, Kaduna State achieved its current borders in 1987. Kaduna State is the fourth largest and third most populous state in the country, Kaduna State is nicknamed the Centre of Learning, owing to the presence of numerous educational institutions of importance within the state such as Ahmadu Bello University, Nigerian Defence Academy, Air Force Institute of Technology (AFIT), Kaduna Polytechnic, etc.

Modern Kaduna State is home to the sites of some of Africa's oldest civilizations, including the Nok civilization that prospered from c. 1500 BC to c. 500 AD. In the 9th century, geographer and historian Ya'qubi documented the existence of the Hausa Kingdoms, which existed until the region was incorporated into the Sokoto Caliphate in the early 1800s. During the colonial era, the city of Kaduna was made the capital of Northern Nigeria Protectorate by British leadership.

Kwara (Yoruba: Ìpínlẹ̀ Kwárà) is a state in Western Nigeria, bordered to the east by Kogi State, to the north by Niger State, and to the south by Ekiti, Osun, and Oyo states, while its western border makes up part of the international border with Benin. Its capital is the city of Ilorin and the state has 16 local government areas.

Of the 36 states of Nigeria, Kwara is the ninth largest in area but the sixth least populous with an estimated population of about 3.2 million as of 2016. Geographically, Kwara is split between the West Sudanian savanna in the east and the Guinean forest–savanna mosaic ecoregion in the rest of the state. Important geographic features include rivers with the Niger flowing along the northern border into Lake Jeba before continuing as the border while the Awun, Asa, Aluko, and Oyun rivers flow through the interior. In the far northwest of the state is the Borgu section of the Kainji National Park, a large national park that contains populations of grey heron, kob, hippopotamus, African bush elephant, olive baboon, and roan antelope, along with some of the last remaining West African lions on earth. In the far southwest, a small part of the Old Oyo National Park contains crowned eagle, martial eagle, African buffalo, oribi, and patas monkey populations.

Adamawa is a state in the North-East geopolitical zone of Nigeria, bordered by Borno to the northwest, Gombe to the west, and Taraba to the southwest while its eastern border forms part of the national border with Cameroon. It takes its name from the historic emirate of Adamawa, with the emirate's old capital of Yola serving as the capital city of Adamawa State. The state was formed in 1991 when the former Gongola State was broken up into Adamawa and Taraba states. The state is one of the most heterogeneous in Nigeria, having over 100 indigenous ethnic groups.

Of the 36 states, Adamawa is the eighth largest in the area, but the thirteenth least populous with an estimated population of about 4.25 million as of 2016. Geographically, the state is mainly composed of highlands and mountains (the Atlantika, Mandara, and the Shebshi ranges) and the Adamawa Plateau crossed by valleys and rivers, most notably the Benue and Gongola rivers. The lowlands of Adamawa are all part of the West Sudanian savanna in the north and the wetter Guinean forest-savanna mosaic in parts of the south, while elevated areas are parts of the Mandara Plateau mosaic and Cameroonian Highlands forests ecoregions. In the extreme south of the state is part of the Gashaka Gumti National Park, a large wildlife park that contains large populations of bushbuck, African buffalo, patas monkey, black-and-white colobus, giant pangolin, and hippopotamus along with some of Nigeria's last remaining Nigeria-Cameroon chimpanzee, African leopard, and African golden cat populations.

Niger State is a state in the North Central region of Nigeria, bordered to the east by Kaduna State and the Federal Capital Territory, to the north by Kebbi State and Zamfara State, and to the south by Kogi and Kwara states, while its western border makes up part of the international border with Benin. It is the largest state in the country by area. The state capital is Minna, and the state is divided into 25 local government areas. Other major cities include Bida, Kontagora, and Suleja.

Of the 36 states of Nigeria, Niger is the eleventh most populous with an estimated population of about 6.7 million as of 2020. Geographically, the state is split between the West Sudanian savanna in the east and the Guinean forest–savanna mosaic ecoregion in the rest of the state. The Kainji Lake as well as the Niger and Kaduna rivers are the state's major water bodies, with the River Niger flowing through from Kainji Lake through the western part of the state and forming the border with Kwara State. Niger State is also home to the Kainji, Jebba, and Shiroro Dams, which are major sources of hydroelectric power. Also situated there is Kainji National Park, the largest National Park in Nigeria, which contains Kainji Lake, the Borgu Game Reserve and the Zugurma Game Reserve.

Ebonyi (Igbo: Alaọha Ebonyi Listen) is a state in the South-East geopolitical zone of Nigeria, bordered to the north and northeast by Benue State, Enugu State to the west, Cross River State to the east and southeast, and Abia State to the southwest. Named after the Abonyi (Aboine) River—a large part of which is in the state's south—Ebonyi State was formed from parts of Abia and Enugu state in 1996 and has its capital in Abakaliki.

One of the smallest states of Nigeria, Ebonyi is the 33rd largest in area and 29th most populous with an estimated population of nearly 2.9 million as of 2016. Geographically, the state is divided between the Cross–Niger transition forests in the far south and the drier Guinean forest–savanna mosaic in the rest of the state. The other important geographical features are the Cross River and its tributary, the River Aloma, which flow along Ebonyi's southeastern and eastern borders, respectively; while fellow Cross River tributaries, the Abonyi (Aboine), Asu, and Eze Aku rivers run through the state's interior. There are other smaller rivers like Ichelle and igbe which also form boundaries between Benue and Ebonyi States to the West.

Enugu Listen (Igbo: Alaọha Enugwu (verbally pronounced as "Enugwu" by the Igbo indigenes) is a state in the South-East geopolitical zone of Nigeria, bordered to the north by the states of Benue and Kogi, Ebonyi to the east and southeast, Abia to the south, and Anambra to the west. The state takes its name from its capital and largest city, Enugu. The city acquired township status in 1917 and was called Enugwu-Ngwo. Due to the rapid expansion towards areas owned by other indigenous communities, it was renamed Enugu in 1928.

Of the 36 states, Enugu is the 29th largest in area and 22nd most populous with an estimated population of over 4.4 million as of 2016. Geographically, the state is divided between the Niger Delta swamp forests in the far south and the drier Guinean forest–savanna mosaic with some savanna in the rest of the state. Other important geographical features are the Udi-Nsukka Plateau and Ekulu River, which flows through the city of Enugu.

Imo (Igbo: Alaọha Imo) is a state in the South-East geopolitical zone of Nigeria, bordered to the north by Anambra State, Rivers State to the west and south, and Abia State to the east. It takes its name from the Imo River which flows along the state's eastern border. The state capital is Owerri and the State's slogan is the "Eastern Heartland."

Of the 36 States in Nigeria, Imo is the third smallest in area, but is the fourteenth most populous, with an estimated population of over 5.4 million as of 2022. Geographically, the state is divided between the Niger Delta swamp forests in the far east and the drier Cross–Niger transition forests in the rest of the state. Other key geographical features are the state's rivers and lakes with the Awbana, Imo, Orashi, and Otamiri rivers along with the Oguta Lake in western Imo State.