Oba is a town in Nigeria. Its postal code is 434112. It was formerly the headquarters of the Idemili South Local Government Area in Anambra State and lies approximately 7 kilometers south of Onitsha along the old Owerri-Onitsha Trunk A Road. The first traditional King of Oba town was Igwe [[Peter Chukwuma Ezenwa( Eze Okpoko I of Oba). (1926-2018)