How to Find Your USCIS Account Number (Step-by-Step Guide)

Your USCIS account number is the identifier USCIS uses to track every case or request tied to you. You will need it when checking case status online, emailing the agency, or following up on applications. You typically receive it on receipts, appointment confirmation notices, or application receipts. This guide explains where to find it across different filing scenarios and how to verify it when it is missing.

What Is a USCIS Account Number

A USCIS account number is a unique alphanumeric code that the U.S. Citizenship and Immigration Services assigns to track a specific request or application. It is not the same as a receipt number, though the terms are sometimes used interchangeably; the account number remains consistent across follow-up submissions for the same case, whereas a receipt number changes each time you file a new form or request. The account number appears on nearly every official notice you receive from USCIS, and it is required in many online portals and support interactions.

Where to Find Your USCIS Account Number

On Paper Notices and Letters

USCIS correspondence normally shows your account number in the top or bottom margin of the page, labeled as A-Number, Case Number, or Account Number. In mailed receipts and appointment confirmation letters, it is often paired with your biometrics or case status information. Look for strings that contain three or more letters mixed with numbers, such as MSC 2390444575 or AB121234567.

In Your USCIS Online Account

When you create a profile on the USCIS website or the ELIS system, your account dashboard lists active cases. Clicking a case reveals details that include the official account number. If you do not see it, check the case summary or the page source of the confirmation email; the account number may appear as a hidden parameter in the link you use to access the case details.

On Confirmation and Receipt Pages

• Receipts for filing fees show a case or file number, which often doubles as the account number.
• Biometrics appointment confirmations include an account number that ties the appointment to your record.
• Extension forms such as I-539 or I-765 return a numbered notice when the case is approved, continued, or denied.

Step-by-Step Guide to Locate Your Account Number

1. Check the email confirmation after you submit a form; the subject line or body usually contains the account number.
2. Open any PDF or printed receipt from USCIS; look for fields labeled A-Number, Case Number, or Account Number.
3. Log in to your USCIS online account or ELIS profile; the case list page displays the number for each submission.
4. If you received an appointment letter, verify the number printed there; this is often used to identify you at the support center or when calling the contact center.
5. When in doubt, include the account number in the subject line of any email to USCIS to ensure proper routing and faster responses.

Common Formats and Examples

USCIS account numbers vary in length but generally follow recognizable patterns. Early system outputs used longer numeric codes, while newer ones combine letters and numbers to avoid duplication. Below are examples of common formats you may encounter.

What to Do If You Cannot Find Your Account Number

If you have checked your email, receipts, and online profile but still cannot locate the number, try these steps before contacting USCIS. First, search your inbox and spam folder for keywords such as case number, A-number, or USCIS confirmation. Second, print or download all PDFs from your account; the number is sometimes present only in the file metadata or footer. Third, review prior notices you have received from USCIS; the account number is often consistent across multiple documents for the same case. If these actions do not reveal the number, prepare your case details, including the date of filing, form name, and any confirmation numbers, when you reach out to USCIS.

Using Your Account Number Correctly

Provide your USCIS account number in the subject line of emails, on reference lines in phone calls, and in the designated field of online forms. This reduces processing delays and ensures your case is routed to the correct officer. When checking case status online, enter the full account number exactly as it appears; partial or altered inputs can cause lookup failures. Keep the number confidential but accessible, and include it in any third-party communications, such as attorney inquiries or support tickets.

Summary

A USCIS account number is the key identifier that links you to your case across the agency’s systems. You can locate it on mailed receipts, appointment confirmations, and within your online account dashboard. Use the correct number in all correspondence and status checks to avoid processing delays. If you cannot find it, search your emails and PDFs first, then prepare your case details when contacting USCIS support.