Alien Registration Number
What Is an Alien Registration Number?
An Alien Registration Number, often called an A-Number, is a unique identification number assigned by the U.S. government to certain non-citizens during immigration processes. The number is issued by U.S. Citizenship and Immigration Services (USCIS) and is used to track an individual’s immigration records.
The A-Number typically contains seven to nine digits and may appear on immigration documents such as green cards, work authorization cards, or immigration notices.
Why It Matters
The Alien Registration Number helps government agencies maintain accurate immigration records and verify a person’s legal status in the United States. It is commonly required for immigration applications, employment eligibility verification, and certain government forms.
For individuals navigating immigration processes, the A-Number is an important identifier used in official records and documentation.
How an Alien Registration Number Works
When a non-citizen enters certain immigration processes—such as applying for permanent residency, asylum, or employment authorization—USCIS assigns an A-Number to track their case.
The number may be used across multiple documents and immigration applications.
Individuals may need to provide their A-Number when completing forms related to:
- immigration benefits
- employment eligibility verification
- certain tax or government records
Example
A lawful permanent resident applying for U.S. citizenship includes their Alien Registration Number on the application form to identify their immigration record.
Alien Registration Number vs Social Security Number
- An Alien Registration Number identifies immigration records within the U.S. immigration system.
- A Social Security Number (SSN) is used primarily for employment, taxation, and government benefits.
FAQs About Alien Registration Numbers
Who receives an Alien Registration Number?
Non-citizens involved in certain immigration processes may receive an A-Number.
Is the A-Number the same as a Social Security Number?
No. These numbers serve different purposes and are issued by different government agencies.
Where can I find my Alien Registration Number?
It may appear on immigration documents such as a green card or employment authorization document.
Related Terms
- Social Security Number
- Taxpayer Identification Number (TIN)
- Internal Revenue Service (IRS)
- Employment
