Due to patron privacy issues, we do not give library card numbers over the phone. In a case like this, you must go into a Phoenix Public Library branch, present a physical photo ID and we will issue you a replacement card for free.
If you are a South Mountain Community College student, your Library Card is your MEID. If you do not know your MEID, you can look it up at: https://tools.maricopa.edu/Support/FindMeid