Where is Zip Code 91998?

Did you receive a letter mailed from zip code 91998? Do you need to know where zip code 91998 is? We have the answer! Zip Code 91998 is located in:

San Diego - California

Zip Code Lookup
Now you know that the location of zip code 91998 is San Diego - California. To find the location of another zip code, please enter it below and press "Where is Zip?"

Where is Zip Code 91999?
Go here for the next zip code on our list of zip codes.