In the realm of US immigration, a unique identifier plays a pivotal role—your Alien Registration Number, commonly known as the A-Number or A#. This seven-to-nine-digit code assigned by the US Citizenship and Immigration Services (USCIS) holds significant importance throughout your immigration journey. Let’s delve into the various aspects of your A-Number to demystify its role and usage.

What is an A-Number for Immigration Purposes?

Your A-Number serves as a distinctive identifier for immigrants applying to reside in the United States. The USCIS assigns this alphanumeric code to track and manage immigration matters efficiently. Understanding the significance of your A-Number is crucial for navigating the intricacies of the US immigration process.

How to Obtain an A-Number

If you’re applying for US permanent residency, the USCIS will assign you an A-Number. Explore the process of obtaining this identifier, particularly when applying for a Permanent Resident Card (Green Card) or another type of Immigrant Visa. It’s important to note that non-immigrants on temporary visas, like tourist or business visitor visas, do not receive an A-Number.

A-Number vs. USCIS Number: Decoding the Differences

Distinguishing between your Alien Registration Number (A-Number) and a USCIS Case Number is essential. While the A-Number is a broader identifier tracking your overall immigration history, the USCIS Case Number is specific to a particular application. Gain clarity on these distinctions to streamline your immigration process.

How to Find Your A-Number

Locating your A-Number on immigration documents is vital for various applications. Uncover where to find your A-Number on documents such as the Permanent Resident Card (Green Card), Employment Authorization Document, and Immigrant Visa. Learn to identify your A-Number on USCIS documents received during your permanent residency application process.


Empower your US immigration journey by understanding the intricacies of your A-Number. From its assignment to its role in different documents, your A-Number is a key player in ensuring a smooth and efficient immigration process.

Green Cards through Employment Sponsorship

Green Cards for Family Members

Additional Outside Resources

We Can Help!

You may have questions regarding U.S. immigration laws and visas. We invite you to reach out to our team at Richards and Jurusik for detailed guidance and assistance. Our goal is to provide you with the most accurate and up-to-date information to make your immigration process smoother and less stressful. The immigration lawyers at Richards and Jurusik have decades of experience helping people to work and live in the United States. Read some of our hundreds of 5-star client reviews! Contact us today for an assessment of your legal situation.

Contact Us

Similar Posts