Locating the alien registration number on a green card is a straightforward process, yet it is a detail many new permanent residents overlook when organizing their immigration documents. This nine or ten-digit code, also known as the A-number, serves as the unique identifier assigned by U.S. Citizenship and Immigration Services (USCIS) to track your case history and immigration status. You will find this number printed prominently on the front of the physical card, and it is essential to have it readily available for any future applications or official inquiries.
Understanding the A-Number
The alien registration number is not just a random string of characters; it is the linchpin of your immigration record. Officially referred to as the "Alien Registration Number," it is issued to every applicant who interacts with USCIS, regardless of the outcome of their application. On a green card, this number is typically located in the top right corner of the document. It is usually formatted as a string of numbers, though in some cases, it may be preceded by a single letter, such as "A" or "B".
Where to Look on the Front of the Card
If you are holding your physical Permanent Resident Card, follow these steps to locate the number. First, examine the front side of the card. You will see a section labeled "USCIS" followed by a string of characters. In the upper right-hand corner of the card, you will find a label that reads "A#". Directly beneath this label is the nine or ten-digit number you are looking for. This is the official alien registration number that immigration officers and agencies will reference.
Decoding the Number Format
While the A-number is usually a series of digits, the format can vary slightly depending on when the card was issued. For cards issued after 2010, the number is typically ten digits long. Older cards or those issued under specific programs might contain a leading letter. When providing this number to a government agency, it is always best to include the exact format as it appears on the card, including any letters, to ensure there are no delays or processing errors.
Locating the Number on the Reverse Side
Although the primary location is the front, it is worth checking the back of the card if you are having difficulty. Some older versions of the green card or specific redesigns might place a secondary barcode or identifier on the reverse side. This area often contains a machine-readable code that includes the alien registration number. Look for a sequence of numbers aligned in a vertical list or integrated into a pattern of bars and spaces. If you still cannot find it, the front of the card remains the most reliable source.
When the Card is Lost or Expired
What do you do if your green card is lost, stolen, or expired before you can locate the number? Do not panic. The number is still associated with your immigration case, and you can retrieve it through official channels. You can check any previous immigration documents, such as your I-551 stamp in your passport or the approval notice you received when you became a permanent resident. Alternatively, you can file a form G-1191, Request for Case Information, with USCIS to obtain your case details and A-number.
Using the Number in Digital Contexts
When filling out online forms or communicating with immigration attorneys, you will often be asked to provide this identifier. Having it memorized or saved in a secure digital note can expedite these interactions. It is important to distinguish this number from your green card number, which is a separate 13-character code located on the back of the card. While the green card number is used to track the physical card itself, the alien registration number tracks your legal status and biographical data within the USCIS system.
