Nigeria postal code

it is 00234
Nigeria doesnt have a single postal code. The country is divided into states or zones. Check http://www.nipost.gov.ng/PostCode.aspx for the code of the particular state you are looking for.

Just found this link http://www.nigeriapostcodes.com that works better than the Map Zooming utility on the link mentioned in the previous paragraph. Try it out!
Nigeria doesn't have a single post-code.