What Is My a-Number and Where Can I Find It

Legal Guide Team

The A-Number, or Alien Registration Number, is a unique nine-digit identifier assigned by the U.S. Citizenship and Immigration Services (USCIS) to noncitizens for immigration records. It begins with the letter “A” followed by eight digits and remains the same across all immigration filings. This number helps agencies track an individual’s immigration history, benefits, and status. Knowing where to locate it can save time when filling forms, checking case status, or contacting USCIS.

What Is An A-Number

An A-Number is a central reference for immigration records in the United States. It is used to request benefits, verify identity, and retrieve case information. Unlike a Social Security Number, it does not indicate a person’s work authorization or tax status by itself. The A-Number is permanently assigned and appears on most official immigration documents and notices. For many individuals, the A-Number is the same as the number listed on their Green Card (Permanent Resident Card) or Employment Authorization Document (EAD).

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Where It Appears On Official Documents

Common documents that display the A-Number include:

  • Green Card (Permanent Resident Card): A-Number typically appears on the front, near the top-right corner.
  • Employment Authorization Document (EAD): The A-Number is printed on the card.
  • Notice of Action (Form I-797): USCIS correspondence often lists the A-Number.
  • Immigration Court Documents: A-Number can appear on notices and filings for court proceedings.
  • Form I-485, I-130, I-130A and Related Applications: A-Number appears on the forms or associated packets.
  • Online USCIS Account: When documents are uploaded or viewed, the A-Number is shown in the case details.

Common Places To Look For Your A-Number

If you’re searching for your A-Number, check these reliable sources first:

  • Physical Cards: Green Card and EAD cards commonly display the A-Number.
  • Official Notices: Look at filing receipts, approval notices, and correspondence from USCIS (I-797).
  • Past Applications: If you filed any immigration forms previously, review copies of those forms or confirmation notices.
  • USCIS Online Account: Log in to your account to view case details and documents that include the A-Number.
  • Lawful Status Documents: Some visas or travel documents may list the A-Number on the header or personal data sections.

What If You Can’t Find The A-Number

If the A-Number isn’t readily visible on documents you possess, consider these steps:

  • Check Multiple Documents: Review any past I-797 notices, notices of action, or biometric appointment letters, as the A-Number may appear there even if not on the card.
  • Review Email (USCIS Notifications): Some digital notices include the A-Number in the header or applicant details.
  • Consult Your Legal Representative: An immigration attorney or accredited representative can locate the A-Number in your case file.
  • Contact USCIS: If the number remains elusive, you can reach USCIS Customer Service for guidance or schedule an inquiry through your USCIS online account.

How To Get Or Replace An A-Number

The A-Number is assigned by USCIS and generally cannot be requested anew if it has not been lost. It is permanent for the individual. Actions to take include:

  • Update Records: Ensure USCIS has your current contact information so you receive future notices with the A-Number.
  • Replace Lost Cards: If your Green Card or EAD is lost or stolen, follow USCIS procedures to replace the card; the newly issued card will display the A-Number if applicable.
  • Guard Your A-Number: Treat it like a sensitive identifier to prevent identity theft. Do not share it unnecessarily with third parties.
  • When Filing Changes: If you file new forms (for example, renewal or adjustment of status), include or reference your A-Number on each submission to keep records aligned.

Tips For Using The A-Number

Efficient use of the A-Number can streamline many immigration processes. Consider these practices:

  • Keep a Secure Record: Maintain a digital and physical copy of the A-Number in a secure place alongside essential immigration documents.
  • Consistency Across Applications: Use the same A-Number across all filings to avoid processing delays.
  • Verify Before Submitting: Double-check the A-Number on forms against your documents to prevent errors that could slow case processing.
  • Share Safely: When necessary, share the A-Number only with trusted entities, such as USCIS or your attorney, through secure channels.

Frequently Asked Questions

Is the A-Number the same as a Social Security Number? No. The A-Number is unrelated to a Social Security Number and is used strictly for immigration records.

Want to talk through your situation?
A quick phone call can clarify your options and next steps. The conversation is confidential.
Call (855) 550-1270
Or dial: (855) 550-1270

Can I have more than one A-Number? No. Each noncitizen is assigned a single A-Number that stays with them throughout U.S. immigration records.

Will an A-Number appear on my passport? Not typically. The A-Number is an immigration record identifier; passports show nationality and document numbers, not the A-Number.

Does an asylum seeker receive an A-Number? Yes, asylum-seekers and many applicants receive an A-Number as part of their immigration proceedings.