Form I-485 · Part 1, Item 9
I-485 USCIS Online Account Number (Part 1, Item 9): Do You Leave It Blank?
What the USCIS Online Account Number is, how it differs from your A-Number and receipt number, and why most first-time filers leave it blank.
Quick answer
Most first-time marriage-based filers leave Item 9 blank. You only have a USCIS Online Account Number if you previously filed something with USCIS that got a receipt number starting with IOE. It is not your A-Number and not your case receipt number.
Summary
Form I-485 Part 1, Item 9 asks for your USCIS Online Account Number, and the field is marked "if any" because many applicants do not have one. It is a number tied to a USCIS online account, separate from the A-Number (the Alien Registration Number USCIS assigns to track a person) and from the receipt number printed on a filing notice. A spouse seeking a green card for the first time, who is the beneficiary on the petition, usually has never opened a USCIS online account and has no number to enter here. In that case you leave Item 9 blank. The petitioner is the U.S. citizen or green card holder sponsoring the spouse; the beneficiary is the immigrant spouse applying with this I-485.
| What it asks | Your USCIS Online Account Number, a number linked to a USCIS online account. The field is marked "if any." |
| Most marriage cases | Leave it blank. A spouse filing for the first time usually has no USCIS online account and no number to enter. |
| When you have one | Only if you previously filed a form that got a receipt number starting with IOE, or you created a USCIS online account that issued one. |
| Where to find it | In your USCIS online account profile, or at the top of the Account Access Notice USCIS mailed you. |
| Not the same as | Not your A-Number and not your case receipt number. These are three different numbers. |
Who this page is for
This page covers the standard case: a spouse completing Item 9 on their own I-485. If you have a complicated USCIS history with several prior filings and are unsure which account a number belongs to, people in that situation often consult a licensed immigration attorney.
What Item 9 looks like on the form
This field sits in Part 1 (Information About You). The label is followed by a single row of digit boxes and a short note below it.
Verbatim · note below Item 9 (Form I-485, edition 01/20/25, page 2)
“If one has been assigned, you can find it on a notice that USCIS may have sent to you.”
9. USCIS Online Account Number (if any)
Verbatim · I-485 Instructions, “How To Complete Form I-485,” Item 4 (edition 01/20/25, page 5)
“You will only have a USCIS Online Account Number (OAN) if you previously filed a form that has a receipt number that begins with IOE. If you filed the form online, you can find your OAN in your account profile. If you mailed us the form, you can find your OAN at the top of the Account Access Notice we sent you. If you do not have a receipt number that begins with IOE, you do not have an OAN. The OAN is not the same as an A-Number.”
Always complete the current edition from uscis.gov/i-485; USCIS rejects outdated editions.
Three numbers people mix up
The USCIS Online Account Number, the A-Number, and the receipt number are three different things. Item 9 wants only the first one, and only if you have it.
| Number | What it is | Format example | On the I-485 |
|---|---|---|---|
| USCIS Online Account Number | A number tied to your USCIS online account. You get one only after a prior IOE filing or after USCIS issues one for an online account. | Usually 12 digits, for example 1234-5678-9012 or a 12-digit string | Part 1, Item 9 · leave blank if you have none |
| A-Number (Alien Registration Number) | The number USCIS uses to track a person across all their immigration records. Many first-time applicants do not have one yet. | The letter A followed by 7 to 9 digits, for example A123456789 | Top of every page and Part 1, Items 4 to 5 · leave blank if none |
| Receipt number | The case-specific tracking number USCIS prints on the receipt notice (Form I-797) after it accepts a filing. | Three letters then 10 digits, for example IOE0912345678 or MSC2190000000 | Not an I-485 field · it appears on your receipt notice after you file |
Where to find it (and when there is nothing to find)
Work through these in order. If none of them turn up a number, you do not have one, and Item 9 stays blank.
Check whether you ever filed something with USCIS online
You only have a number here if you previously filed a form through a USCIS online account or got a receipt number that starts with IOE. If your I-485 is your household's first interaction with USCIS, you almost certainly do not have one. A spouse who has never filed anything has none.
Look in your USCIS online account profile
If you did file online, sign in at the USCIS website and open your account profile. The USCIS Online Account Number is listed there. This is the place to confirm it rather than guessing.
Look at the top of your Account Access Notice
If you mailed USCIS a form earlier and they set up an online account for you, they sent an Account Access Notice. The number is printed at the top of that notice.
If you have none, leave Item 9 blank
The field says "if any." Having no number is normal and correct for most first-time filers. Do not put your A-Number or your receipt number here as a substitute. Leaving it blank is the right answer when no number was ever assigned.
Not sure whether you have one of these numbers?
Our software asks a few plain questions and fills the right fields the right way, keeping your numbers consistent across your whole I-130 and I-485 packet.
Start FreeWhat USCIS does with the online account number
The USCIS Online Account Number links your paper or online filing to an existing USCIS online account so the agency can connect your records and let you track the case in one place. It is an account identifier, not an identity or eligibility field. Because most first-time applicants have never opened an account, the field is optional and marked "if any." Leaving it blank when you have no account does not slow your case. What can cause confusion is entering the wrong number, such as a receipt number or A-Number, in this field, since those identify different things.
Common mistakes
These are the ones that show up most often on this field.
- 1
Entering your A-Number in Item 9
The A-Number (the Alien Registration Number that tracks a person across immigration records) belongs in Part 1, Items 4 to 5 and at the top of each page, not in Item 9. The USCIS Online Account Number is a separate account identifier. Mixing them up is the most common error on this field.
- 2
Entering a case receipt number
The receipt number on a Form I-797 notice (three letters then 10 digits) tracks one specific case. It is not the same as the account number. If your only USCIS number starts with the letters of a receipt code rather than coming from an account profile, it is probably a receipt number, not the OAN.
- 3
Inventing a number because the box is there
The field is marked "if any." If USCIS never assigned you a USCIS Online Account Number, there is nothing to enter. A spouse filing for the first time should leave it blank rather than guess or copy a number from somewhere else.
- 4
Confusing the applicant's field with the attorney's field
The first page of the I-485 has a separate "Attorney or Accredited Representative USCIS Online Account Number" box in the top section. That box is for a representative, not for you. Your own number, if you have one, goes in Part 1, Item 9.
Related guides
Form and pathway context
Frequently asked questions
I am a spouse filing my first green card application. Do I have a USCIS Online Account Number?
Probably not. You only have one if you previously filed something through a USCIS online account or received a receipt number that begins with IOE. If this I-485 is your first filing, leave Item 9 blank.
Is the USCIS Online Account Number the same as my A-Number?
No. The A-Number (Alien Registration Number) is how USCIS tracks a person across their records, and it goes in Part 1, Items 4 to 5. The USCIS Online Account Number is an account identifier and goes in Item 9. They are different numbers.
Is it the same as the receipt number on my notices?
No. The receipt number tracks one specific case and is printed on a Form I-797 notice as three letters plus 10 digits. The USCIS Online Account Number comes from your online account profile or the top of an Account Access Notice.
Where do I find my USCIS Online Account Number if I do have one?
If you filed online, sign in to your USCIS account and look in your account profile. If you mailed a form earlier and USCIS opened an account for you, the number is at the top of the Account Access Notice they sent.
Will leaving Item 9 blank cause a problem?
No. The field is marked "if any." Leaving it blank is correct when USCIS never assigned you a number. Entering the wrong number, like an A-Number or a receipt number, is more likely to cause confusion than a blank field.
Key takeaways
- ✓
Item 9 is optional and marked "if any." Most first-time marriage-based filers leave it blank.
- ✓
You only have a USCIS Online Account Number if you previously filed through a USCIS online account or got a receipt number starting with IOE.
- ✓
It is not your A-Number (Part 1, Items 4 to 5) and not your case receipt number (on a Form I-797 notice).
- ✓
Find it in your USCIS online account profile, or at the top of the Account Access Notice USCIS mailed you.
- ✓
The attorney box on page 1 is for a representative, not for you. Your own number, if any, goes in Part 1, Item 9.
This page is for educational purposes only and is not legal advice. Green Card Genius is self-help immigration software, not a law firm, and does not provide legal representation. Immigration law and USCIS policy change frequently. For advice on a specific case, consult a licensed immigration attorney. Form I-485, edition 01/20/25. Last verified May 2026.
Continue reading
- 01Form I-485: Application to Adjust Status (2026 Guide)
- 02I-485 Place and Date of Last Arrival (Part 1, Items 10-12) (2026)
- 03I-485 Filing Category (Part 2): Which Box a Spouse Checks (2026)
- 04I-864 Part 5, Item 1: Total Number of Persons in Household (2026)
- 05Marriage Green Card by Country: Country-Specific Guides (2026)
Be a Genius
Only pay when you file