Gambia do not make use of zip code or postal code. Zip code is used in some Countries like Canada, USA etc but it is not used in Gambia. That shouldn’t stop you from using a zip code,  Most people have resorted to using 00000 or 12345 as Gambia zip code.  keep in mind that 00000 or 12345 is not the zip code for Gambia but you can use it since Gambia doesn’t make use of zip code. read the article below to fully learn what zip code is and how it works.
What is a Zip Code or Postal code
According to the dictionary, a zip code which is an acronym for Zone Improvement Plan means a system used in the U.S. to facilitate the delivery of mail, consisting of a five- or nine-digit code printed directly after the address, the first five digits (initial code) indicating the state and post office or postal zone, the last four (expanded code) the box section or number, portion of a rural route, building, or other specific delivery location. while postal code means a mailing code system used in Canada similar to the zip code in the U.S. and the postcode in Britain. This is just the dictionary term because as of now many country uses zip codes and postal code.
Is there difference between Gambia zip codes and Gambia Postal Code?
From the definition above you would agree with me that they all means the same thing only that they are called zip codes in some countries like USA and then postal codes or post codes in other countries. To know more about the uses and the importance of a zip code/postal codes read this article>> ALL YOU NEED TO KNOW ABOUT ZIP CODES AND POSTAL CODES
What will happen if i use a wrong  Postal Code or zip code while shopping online?
When you use an invalid zip code/ postal code online, since Gambia has no zip code. nothing will happen and your order will still be delivered to you using your address information you provided while filling the form.
Now i think you know what a zip code or postal code and also you have known that zip code system is not used in Gambia. But its quite unfortunate that most people don’t know this. do you have any question you would like to ask?? please do that using the comment box below and i will be more than happy to address it.