Your AAA number is located in several easy to find locations, provided you know where to look for it. For example, if it is near the middle of the month, then you have likely just received your copy of AAA Horizons or the publication of your local affiliate of the auto group. If so, take a look at the mailing label and in the top line you will find your AAA number. If you cannot locate it that way, you can try using the AAA national hotline 1-800-222-8252, the national membership hotline toll-free number. If you are still having problems, you can try to contact your local AAA office and they should be able to help you find your AAA number.
For more info, see Advantages of AAA Warranty for Auto Repair Insurance