The Alien Registration Number (A-Number) is a unique identification number assigned to foreign nationals by U.S. immigration authorities. It usually consists of seven, eight, or nine digits and is given to individuals who have formal contact with the U.S. immigration system. This number serves as an individual identifier and is used across all records maintained by the United States Citizenship and Immigration Services (USCIS).
Role and significance
The A-Number plays a key role in immigration processes. It allows USCIS to quickly locate a person’s file and connect all cases concerning the foreign national, including visa applications, immigration forms, and official decisions. This number may appear on various documents such as the Permanent Resident Card (Green Card), asylum-related documents, or official correspondence from USCIS.
Where can the A-Number be found?
The A-Number appears on the Green Card, USCIS-issued documents (such as the Notice of Action – Form I-797), and records related to deportation or asylum proceedings. Depending on the document, it may be labeled as “USCIS#” or directly as “A-Number.”
Important information
The Alien Registration Number is permanent and unique – once assigned, it remains with the individual throughout all interactions with the U.S. immigration system. In passport and visa processes conducted by the Department of State, the A-Number may be required to verify the applicant’s immigration history.
Summary
The Alien Registration Number (A-Number) is a unique immigration identifier that plays a crucial role in documenting foreign nationals in the United States. It ensures effective management of immigration cases and verification of an individual’s residency and status history.
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* The information provided in this article is for informational purposes only and does not constitute legal advice. The content has been prepared based on publicly available information, including the U.S. Department of State website and other thematic sources, and is intended to clarify selected issues and assist individuals interested in the process of applying for documents, including passports and visas.