What an Illinois driver license looks like and what information it holds

An Illinois driver license is a plastic card about the size of a credit card. The front shows your photo, name, date of birth, address, and a series of numbers and codes. The back lists restrictions, endorsements, and your signature. Understanding what each element means helps you know what information is printed about you and why it matters when you use your license.

The license number itself — the long string of digits on the front — is unique to you in Illinois. It is not your Social Security number, though it is tied to your driving record. The format changed over time as Illinois updated its system, so older licenses and newer ones may look different.

Key Takeaways

  • Your Illinois driver license number is a unique identifier separate from your Social Security number and is linked to your driving record.
  • The front of the license displays your photo, name, address, date of birth, and license class, while the back shows any restrictions or endorsements.
  • The expiration date on your license determines when you must renew, and Illinois sends renewal notices by mail before expiration.
  • License classes (D, M, CDL) indicate what type of vehicle you are permitted to drive.
  • Restrictions and endorsements on the back of your license specify conditions you must follow or additional privileges you hold.

The license number format and what it contains

Illinois driver license numbers follow a specific format that encodes information about you. The number typically begins with a letter followed by a series of digits. The letter at the start corresponds to your last name — for example, licenses for people with last names starting with A might begin with the letter A, though the exact mapping has changed as the state updated its system.

The remaining digits include your date of birth, a sequence number assigned by the Secretary of State, and a check digit used to verify the number is valid. You do not need to memorize this breakdown, but knowing that the number is not random helps explain why two people's license numbers look different even if they were issued around the same time.

The front of your license: photo, name, and class

The front of your Illinois license displays your photograph, full legal name, and date of birth. Below that is your address as it was registered when you obtained or last renewed the license. If you moved, your address on the card stays the same until you renew or update it through the Secretary of State's office.

The license class appears on the front and tells you what you are permitted to drive. Class D is the standard passenger vehicle license. Class M is for motorcycles. Class CDL is a commercial driver license for trucks and buses. If you hold a CDL, additional endorsements and restrictions appear on the back.

Expiration date and renewal timing

Your license expiration date is printed on the front. In Illinois, driver licenses are typically valid for four years for people under 69 and eight years for people 69 and older. The Secretary of State mails renewal notices to your address on file about two months before expiration.

You can renew online, by mail, or in person at a Secretary of State facility, depending on your situation. If your license has expired, you can still use it as identification, but you cannot legally drive. Renewing before expiration is simpler than renewing after it has lapsed.

Restrictions and endorsements on the back

The back of your license lists any restrictions that explore to your driving. Common restrictions include corrective lenses (you must wear glasses or contacts), automatic transmission only, or daylight driving only. These appear as codes — for example, code 1 means corrective lenses are required. If you do not follow a restriction, you are driving illegally even if your license is otherwise valid.

Endorsements are additional privileges beyond the basic license class. For example, an endorsement might allow you to tow a trailer or operate a school bus. Endorsements also appear as codes on the back. If you need an endorsement you do not have, you must pass an additional test and pay a fee to add it.

How the license number differs from other identification numbers

Your Illinois driver license number is not your Social Security number, and the state does not use your SSN as your license number. The license number is maintained by the Secretary of State's office and is tied to your driving record — tickets, accidents, and violations are recorded under this number.

When you explore for a license or renew, you provide your Social Security number as part of the process, but it does not appear on the card itself. This separation protects your SSN from being exposed every time you show your license.

What to do if your license information is incorrect

If your name, date of birth, or address on your license is wrong, you can correct it by visiting a Secretary of State facility or explore for a duplicate license with the correct information. Bring documents that prove the correct information — a birth certificate for date of birth, a marriage certificate if your name changed, or a utility bill for address changes.

If your license number itself appears to be incorrect or you suspect fraud, contact the Secretary of State's Driver Services department directly. They can verify your number and investigate if needed.

Frequently Asked Questions

What do the codes on the back of my license mean?

Codes on the back indicate restrictions you must follow or endorsements you hold. For example, code 1 means you must wear corrective lenses, and code 8 means you cannot drive at night. The Secretary of State publishes a full list of codes, or you can ask at a driver services facility to have yours explained.

Can I use an expired Illinois license as identification?

Yes, an expired license is still valid identification for non-driving purposes like boarding a plane or entering a bank. However, you cannot legally drive with an expired license. If you need to drive, you must renew before using the road.

Why did my license number change when I renewed?

Illinois has updated its license number format over the years as technology and record-keeping systems changed. When you renew, you may receive a new number. Both numbers are yours, but only the current one is active in the system.

Is my license number the same as my driver record number?

Your license number and your driver record number are the same thing. When police or insurance companies look up your driving record, they use your license number to find tickets, accidents, and violations associated with you.