How to Read Your Green Card: Every Field Explained

You did it. You navigated the forms, the interviews, and the waiting game. Now, you are holding the physical proof of your permanent residence in your hand: your Green Card.

Formally known as the Permanent Resident Card (Form I-551), this ID is more than just plastic. It is your ticket to working and living in the United States legally. However, when you look closely at the card, it can look like a puzzle of codes, dates, and numbers.

Understanding how to read your green card is essential. The information printed on this card dictates when you can apply for citizenship, when you need to renew your status, and proves your right to work.

At Greenbroad, we believe immigration shouldn’t be a mystery. Whether you are holding your first 2-year conditional card or your 10-year permanent card, this guide will walk you through every single field so you know exactly what your status is.

Anatomy of the Front of Your Green Card

When learning how to read your green card, the front of the card contains the most critical biographical and legal information. USCIS updates the design every few years to improve security, but the core fields remain consistent.

Here is a breakdown of the fields you will see on the front of a standard 2026 Permanent Resident Card.

1. Surname and Given Name

This is your legal name.

• Surname: Your last name (family name).
• Given Name: Your first and middle name.

Note: If your name is long, it might be truncated (cut off) on the card. This is usually okay, but if your name is spelled incorrectly, it is a problem that needs fixing immediately.

2. USCIS # (Your A-Number)

This is arguably the most important number on the card. You will see it listed as USCIS #.

• What it is: This is your Alien Registration Number (or A-Number).
• Format: usually 9 digits (e.g., 123-456-789).
• Why it matters: This number is unique to you. It does not change, even if you get a new card or become a U.S. citizen later. You will need to write this number on every future immigration form you file (like when removing conditions or applying for naturalization).

3. Category

This field contains a short code (usually 2-3 characters) that explains how you obtained your green card. For couples using Greenbroad, this is a very important field.

Common codes for marriage-based cases include:

• CR1 / CR6: Conditional Resident. (Spouse of a U.S. Citizen, married less than 2 years at the time of approval).
• IR1 / IR6: Immediate Relative. (Spouse of a U.S. Citizen, married more than 2 years at the time of approval).
• F2A: Spouse of a Lawful Permanent Resident (Green Card holder).

We will dive deeper into these codes in the “Decoding the Category Field” section below.

4. Country of Birth

This simply lists the country where you were born. Note that this is based on current international borders. Your country of birth is used to track “chargeability” for visa caps, though that matters less once you already have the card.

5. Date of Birth

Listed in the American format: MM/DD/YYYY (Month/Day/Year).

6. Sex

• M: Male
• F: Female

7. Card Expires

This date tells you when your physical card is no longer valid.

• For 10-Year Cards: If you have an IR1, IR6, or employment-based card, this date is 10 years in the future. You generally just need to renew the card (Form I-90) before this date.
• For 2-Year Cards: If you have a CR1 or CR6 category, this date is exactly two years after you became a resident. You cannot just renew this card. You must apply to “remove conditions” (Form I-751) in the 90-day window before this date.

8. Resident Since

This date marks the official start of your Permanent Residence.

• This is the “clock start” for your U.S. Citizenship eligibility.
• If you are married to a U.S. citizen, you can usually apply for citizenship 3 years from this date (minus 90 days).
• For most others, you can apply 5 years from this date.

Citizenship Through Marriage - 3 Year Rule

Anatomy of the Back of Your Green Card

Many people ignore the back of the card, but it contains essential technical data used by border agents and government agencies.

1. The Machine-Readable Zone (MRZ)

At the bottom of the back of the card, you will see several lines of code that look like this: <<<<<<<<123456<<<<<.

This allows Customs and Border Protection (CBP) to scan your card quickly when you enter the U.S. It contains your name, A-Number, and birth date encoded.

2. The Card Number (Inventory Control Number)

This is often the most confusing part of how to read your green card.

On the back of the card, usually in the first line of characters, there is a unique string of letters and numbers that is different from your USCIS#.

• It usually starts with three letters (like LIN, SRC, MSC, IOE).
• This represents the specific receipt number for the application that produced this specific card.
• Important: If a form asks for your “Document Number” or “Card Number,” use this string from the back. If a form asks for your “A-Number” or “USCIS Number,” use the number from the front.

3. Holographic Security Features

To prevent counterfeiting, the back of the card features complex holographic images that change color or appearance when you tilt the card. This proves the card is authentic.

Decoding the “Category” Field: A Deep Dive

The “Category” field is more than just a label; it defines the laws that apply to you. Because Greenbroad specializes in helping couples, let’s look at the specific codes you are most likely to see.

The “Conditional” Codes (CR1, CR6)

If your card says CR1 or CR6, you are a Conditional Resident.

• Why: You were married to your U.S. citizen spouse for less than two years on the day your green card was approved.
• The Scenario: Maria married John (a U.S. Citizen) in January 2024. She got her green card in January 2025. Because the marriage was only 1 year old, her card is marked CR6.
• The Consequence: Maria’s card expires in January 2027. She must file Form I-751 to prove the marriage is still real before that date.

I-751 Remove Conditions - Complete Guide (2026 Edition)

The “Immediate Relative” Codes (IR1, IR6)

If your card says IR1 or IR6, you are a Permanent Resident without conditions.

• Why: You were married to your U.S. citizen spouse for more than two years on the day your green card was approved.
• The Scenario: David married Sarah (a U.S. Citizen) in 2022. Due to processing delays, he didn’t get his green card until 2025. Because they had been married over 2 years, his card is marked IR6.
• The Consequence: David’s card is valid for 10 years. He does not need to remove conditions.

What is the difference between the numbers (1 vs 6)?

• 1 (e.g., CR1, IR1): Usually means you entered the U.S. with an immigrant visa (consular processing).
• 6 (e.g., CR6, IR6): Usually means you adjusted status from inside the U.S. (filed Form I-485).

Why “Resident Since” Matters for Citizenship

When you are learning how to read your green card, do not overlook the Resident Since date. This is your golden ticket to naturalization.

To become a U.S. citizen, you must meet a “continuous residence” requirement.

• 3-Year Rule: If you are married to and living with a U.S. citizen, you can apply for citizenship 3 years after the “Resident Since” date.
• 5-Year Rule: For almost all other categories, you must wait 5 years after the “Resident Since” date.

Pro Tip: You can actually submit your N-400 application 90 days before your 3-year or 5-year anniversary. Use the date on your card to calculate your earliest filing window.

Common Mistakes When Reading Your Green Card

Even though the card seems straightforward, we see applicants make the same mistakes repeatedly on future forms.

Mistake 1: Mixing up the USCIS # and the Card

We cannot stress this enough.

• USCIS # (Front): Starts with ‘A’. Identifies you as a person.
• Card # (Back): Starts with 3 letters (e.g., MSC). Identifies the card as a document.

Mistake 2: Assuming the “Expiration Date” is the “status” expiration

If you have a 10-year card and it expires, you do not lose your permanent resident status—you just have an expired ID (like an expired driver’s license). You are still a resident.

However, if you have a 2-year Conditional card and it expires, you lose your status and could face deportation proceedings if you haven’t filed Form I-751. The stakes are much higher for 2-year cards.

Mistake 3: Ignoring Misspellings

If your name is “Jonathon” but the card says “Jonathan,” do not ignore it. Using a name that doesn’t match your card on tax returns, driver’s licenses, or Social Security documents can cause massive headaches.

Frequently Asked Questions (FAQs)

Here are the most common questions our customers ask about how to read your green card.

What is the USCIS number on a green card?

The USCIS number is identical to your Alien Registration Number (A-Number). It is a unique 7, 8, or 9-digit number assigned to you by the Department of Homeland Security. Unlike your passport number, which changes when you get a new book, your A-Number stays with you for life.

Where is the expiration date on a green card?

The expiration date is printed clearly on the front of the card, labeled “Card Expires.” It is vital to check this date immediately. If the date is 2 years from your “Resident Since” date, you have conditional status. If it is 10 years away, you have permanent status.

What does the Category code mean on a green card?

The Category code indicates the section of immigration law under which you were admitted. It tells authorities if you are a refugee, an employment-based immigrant, or a marriage-based immigrant. For example, “CR6” means “Conditional Resident, spouse of citizen, adjusted status.”

Where is the green card number located?

The actual Green Card Number (Document Number) is on the back. It is part of the first line of characters in the machine-readable zone or printed separately depending on the card version. It typically begins with three letters like WAC, SRC, or IOE.

What should I do if my name is misspelled on my green card?

You must file Form I-90 (Application to Replace Permanent Resident Card).

• If it was USCIS’s fault: You do not have to pay the filing fee, but you must send the original incorrect card back with the application.
• If it was your fault (you wrote it wrong on the form): You must pay the full filing fee for Form I-90.

Green Card Renewal - I-90 Application

What to Do If Your Green Card Has an Error

You just opened the envelope, and your heart sank. Your birth date is wrong, or they misspelled your last name. What now?

1. Check your copies: Look at the forms you submitted (Greenbroad provides you with a full copy of your packet for this exact reason). Did you write the name correctly?
2. File Form I-90: You need to request a replacement.
3. Submit Evidence: If the error is biographical, submit a copy of your birth certificate or passport showing the correct information.
4. Wait: Unfortunately, getting a corrected card can take several months. While you wait, you can get an ADIT stamp (I-551 stamp) in your passport by making an appointment at your local USCIS field office. This stamp acts as temporary proof of your green card.

2026 Update: USCIS filing fees change periodically. Always check the official USCIS I-90 page for the most current fee schedule before filing.

Conclusion

Knowing how to read your green card gives you power over your immigration journey. Those codes and dates tell you exactly when you need to take action to protect your status and when you can finally apply for U.S. citizenship.

Your green card is a symbol of the new life you are building in the United States. Don’t let paperwork stress dampen the celebration.

If you are looking ahead to Removing Conditions (I-751) or applying for Naturalization (N-400), you don’t need to hire an expensive law firm to get it right.

Greenbroad offers a complete, guided solution for $749. We help you navigate the forms, gather the right evidence, and review everything to ensure it’s accurate. We handle the bureaucracy so you can focus on your future.

Ready for the next step? Start your application with Greenbroad today.

Disclaimer: The information provided in this article is for educational purposes only and does not constitute legal advice. Immigration laws and procedures are subject to change. For complex legal issues or criminal history, please consult with a qualified immigration attorney.