Katsina State $6.022 billion

This state is located in the North-West zone of Nigeria. It`s one of the smallest states in Nigeria. Katsina State covers the territory around 24.192 square kilometres. The total population of the state is 6,5 million people, where the largest ethnic group is the Hausa. The dominant religion of the Katsina State is Islam. The total GDP of the state is $6.022 billion, per capita is $1.017. Katsina State is the capital of education in Nigeria. This member of top 20 richest state of Nigeria has schools and universities, like Hassan Usman Katsina Polytech, AlQalam University Katsina, Federal College of Education, Federal University of Agriculture, Yusufu Bala Usman College of Legal and General studies.

Anambra State $6.764 billion

The state is located in the South Central region of the country. It covers the territory around 4.844 square kilometres, which makes it the second smallest state in Nigeria after Lagos State. The indigenous and dominant ethnic group in the state is the Igbo. The total GDP of the state is $6.744 billion, per capita is $1.615. The state is rich in oil and gas resources. Therefore, the Government plans to build refineries in the state for increasing of crude oil production.