Alien Registration Number (A-Number): What It Is & Where to Find It
An Alien Registration Number (A-Number) is a unique seven- to nine-digit identifier assigned to non-U.S. citizens by the U.S. Citizenship and Immigration Services (USCIS). It is used for tracking immigration records and is required for green card applications, work permits, and other legal processes.
Where to Find Your A-Number
- Green Card (Permanent Resident Card) – Listed as the USCIS# on the front.
- Employment Authorization Document (EAD) – Located under USCIS#.
- Immigration Documents – Found on visa paperwork or notices from USCIS.
Why Is an A-Number Important?
- Required for immigration applications and petitions.
- Used to track legal status and immigration history.
- Essential for work authorization and naturalization processes.