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On 27 August, 1991, the state was renamed Adamawa State.
The state is named for Modibo Adama, a leader of the Fulani Jihad in 1804. Adama came from the region of Gurin, a village inside of the state. In 1806 he received a green flag for his role in leading the jihad.
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On 1 January, 2020 AustAgder and VestAgder counties merged to form Agder county.
On 1 January, 2020 Akershus, Buskerud and Østfold counties merged along with three other municipalities to form Viken county.
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Akwa Ibom is one of the 36 states in Nigeria which were created in 1987.