My zip code and the state address does not match

Im trying to put my address in my billing address and the zip code that I used before for La Ceiba which is my city (AT1100) and the state Atlantida, does not match, thats the same zip code that ive used before im trying to look it up online but cant find it, the zip code of the area does not have letters. Is only (32101) can you help me solve the issue? Im trying to give family sharing but my members cant use the premium apps due to that issue.