Idah is a town in Kogi State, Nigeria, on the eastern bank of the Niger River in the middle belt region of Nigeria. It is the headquarter of the I…Idah is a town in Kogi State, Nigeria, on the eastern bank of the Niger River in the middle belt region of Nigeria. It is the headquarter of the Igala Kingdom, and also a Local Government Area with an area of 36 km². Idah had a population of 79,815 at the 2006 census.