I think there is a misunderstanding here. there is no zip code for Nigeria only postal code. The postal code for Surulere where I stay is 101014, got dis online long time ago. I can't remember where but I googled it. The first link is for every1 to understand d concept of dis codes properly. The second link is to confirm d postal code 101014 and try to confirm which ever u find. U can also try guessing and see d location u will get.
Link 1
Link 2