No. Your USCIS A-number does not change. Once the Department of Homeland Security assigns you that seven-, eight-, or nine-digit Alien Registration Number, it stays with you for life. It survives green card renewals, status adjustments, new work permits, and even naturalization. Every filing you make and every decision in your case links back to that same number.1U.S. Citizenship and Immigration Services. A-Number/Alien Registration Number/Alien Number
Older A-numbers have only seven or eight digits. If yours is short, add a leading zero after the “A” when a form or online system asks for nine digits. A12345678 becomes A012345678. The number itself has not changed; only the format has been padded for modern systems.2U.S. Citizenship and Immigration Services. Immigrant Fee Payment: Tips on Finding Your A-Number and DOS Case ID
The Number Stays With You Across Renewals and Status Changes
Renewing or replacing an immigration document does not produce a new A-number. When you renew your green card (Form I-551), receive a new Employment Authorization Document (Form I-766), or get an updated I-797 approval notice, the A-number printed on each of those documents is the same one you were originally assigned.3U.S. Citizenship and Immigration Services. 13.1 List A Documents That Establish Identity and Employment Authorization
The same rule holds when your immigration status changes. Moving from a work visa to lawful permanent residence, or from one category of green card to another, does not reset your identifier. Your status changes; your A-number does not.
It Stays With You After Naturalization Too
Becoming a U.S. citizen does not erase your A-number. Your Certificate of Naturalization prints it right on the document, listed as the “USCIS registration number,” alongside your name, date of birth, and photo.4USCIS. Chapter 3 – Certificate of Naturalization
After naturalization the number effectively goes dormant. U.S. citizens don’t file for immigration benefits, so you rarely need to use it. But your immigration file, linked to that number, stays in USCIS records permanently. When you apply for your first U.S. passport, the Department of State’s Form DS-11 lets you include your former A-number. It isn’t required, but supplying it helps link your records.5U.S. Department of State. Apply for Your Adult Passport
When Two A-Numbers Get Assigned
In rare cases, one person ends up with two A-numbers. This usually happens when one number was assigned during consular processing overseas by the Department of State and a second was assigned during a domestic USCIS filing. It looks like the number “changed,” but what really happened is that a duplicate file exists.
Duplicate numbers can cause delays at the border, slow down naturalization, or trigger secondary inspection when you re-enter the country. There is no form you can file on your own to consolidate them. USCIS handles the merge internally, and if the issue hasn’t been resolved by the time you reach an interview, the officer can request consolidation at that point. Until then, use the A-number printed on your green card for all filings, because that is the active number in USCIS systems.
Correcting a Wrong A-Number on a Document
Sometimes USCIS prints an incorrect A-number on a card or notice. Fixing the printed error is not the same as getting a new number; your underlying A-number in the system stays the same.
If the mistake was the agency’s fault, you can request a corrected green card without paying a new fee. File Form I-90, check filing category 2.d or 3.d, include the card with the error, and attach documentation showing the correct information.6U.S. Citizenship and Immigration Services. Immigration Documents and How to Correct, Update, or Replace Them
If the error came from information you originally provided, you still file Form I-90, but the standard filing fee applies: $415 online or $465 by paper.7U.S. Citizenship and Immigration Services. Frequently Asked Questions on the USCIS Fee Rule
Where to Find Your A-Number
Because the number never changes, any immigration document USCIS has issued to you should carry the same one. Common places to look:
- Permanent Resident Card (Form I-551): labeled “USCIS#” or “A#” on the front and back of cards issued after May 2010.3U.S. Citizenship and Immigration Services. 13.1 List A Documents That Establish Identity and Employment Authorization
- Employment Authorization Document (Form I-766): shown under “USCIS#” on the front.
- Immigrant visa stamp in your passport: identified as the “Registration Number.”2U.S. Citizenship and Immigration Services. Immigrant Fee Payment: Tips on Finding Your A-Number and DOS Case ID
- Form I-797 approval notices and other USCIS correspondence: typically near the top of the document.8U.S. Citizenship and Immigration Services. Form I-797: Types and Functions
- Certificate of Naturalization: listed as the “USCIS registration number.”4USCIS. Chapter 3 – Certificate of Naturalization
The number also appears on the Immigrant Data Summary and the USCIS Immigrant Fee handout you receive during visa processing. Whenever you compare documents, expect the A-number to match across all of them. If two documents from USCIS actually show different numbers, that points to the duplicate-file situation described above rather than a real change to your identifier.9U.S. Citizenship and Immigration Services. Verification Process