Northern Nigeria: Adamawa, Bauchi, Benue, Borno, Gombe, Jigawa, Kaduna, Kano, Katsina, Kebbi, Kogi, Nasarawa, Niger, Plateau, Sokoto, Taraba, Yobe, Zamfara. Geographically larger, predominantly Muslim, Hausa-Fulani largest ethnic group.
Southern Nigeria: Abia, Akwa Ibom, Anambra, Bayelsa, Cross River, Delta, Ebonyi, Edo, Ekiti, Enugu, Imo, Lagos, Ogun, Ondo, Osun, Oyo, Rivers. Geographically smaller, diverse religious beliefs (Christianity, Islam, Traditional), Yoruba and Igbo predominant.