What a Colorado driver's license number is and where to find it

Your Colorado driver's license number is a unique identifier printed on the front of your physical license card. It appears in the upper right corner and consists of numbers only — no letters. This number stays with you for the life of your license in Colorado, even if you renew it multiple times, as long as you remain a Colorado resident.

The number is also called your driver's license number or DL number. You'll see it on your physical card, and it's the same number Colorado Department of Transportation (CDOT) uses in their records to track your driving history, violations, and license status.

Key Takeaways

  • Your Colorado driver's license number is printed in the upper right corner of your physical card and contains only numbers.
  • The number remains the same throughout your life as a Colorado resident, even when you renew your license.
  • You can find your number on your physical card, your renewal notice, or by contacting CDOT directly.
  • Colorado does not use Social Security numbers as driver's license numbers, and you should never share your license number with untrusted sources.
  • If you lose your license or need to verify your number, CDOT can provide it through their customer service channels.

How Colorado assigns and structures driver's license numbers

Colorado generates driver's license numbers sequentially as new licenses are issued. The state does not embed personal information — such as your birth date, gender, or initials — into the number itself. This means you cannot decode your license number to learn anything about yourself or anyone else.

The number is assigned when you first receive your Colorado license and does not change when you renew. If you move out of Colorado and later return, you may receive a new number, but as long as you remain a resident and renew on schedule, your number stays constant. This consistency makes it easier for law enforcement, courts, and insurance companies to maintain accurate records tied to your driving history.

Where to locate your Colorado driver's license number

The easiest place to find your number is on the physical card itself, in the upper right corner. If you don't have your card in front of you, check any renewal notices or identification documents Colorado sent you — the number appears on those as well.

If you've lost your card or cannot locate your number, you can contact CDOT's Driver Services section by phone at 303-205-5613 or visit a local Driver Services office in person. You'll need to provide identifying information such as your name, date of birth, and address. CDOT can also mail you a replacement card if yours is damaged or lost.

Why Colorado uses driver's license numbers instead of Social Security numbers

Colorado law prohibits using Social Security numbers as driver's license numbers. This protects your privacy and reduces the risk of identity theft, since your license number is visible to police officers, insurance agents, and others during routine interactions. A separate, non-sensitive number limits the damage if someone gains unauthorized access to your license information.

Many states adopted this practice after federal privacy laws discouraged the use of Social Security numbers as universal identifiers. Colorado's approach means your license number alone cannot be used to access your tax records, bank accounts, or other sensitive financial information.

Using your driver's license number for records and verification

You may need your driver's license number when you interact with law enforcement, explore for a job, register a vehicle, or work with your insurance company. Insurance agents and police officers routinely ask for it during traffic stops or claims processing. Courts and the Colorado Department of Revenue also use it to track violations, fines, and vehicle registration.

When you provide your number to a business or government agency, verify that the organization is legitimate before sharing it. Scammers sometimes pose as CDOT or insurance companies to collect personal information. If you're unsure whether a request is genuine, contact the organization directly using a phone number or website you know is correct, rather than using contact information provided in an unsolicited message.

What to do if you suspect fraud or misuse of your license number

If you believe someone has used your driver's license number fraudulently — for example, if you see traffic violations you didn't commit or receive notices for tickets you didn't receive — contact CDOT when ready. You can reach them at 303-205-5613 or visit a local office. Bring your physical license and any notices or documents related to the suspicious activity.

CDOT can investigate whether the violations belong to you or another person and correct their records if an error occurred. If the fraud is part of a broader identity theft scheme, you may also want to file a report with the Federal Trade Commission at IdentityTheft.gov and consider placing a fraud alert with the credit bureaus.

Frequently Asked Questions

Can I look up someone else's driver's license number?

No. Colorado does not release driver's license numbers to the public. You can request your own number from CDOT, but accessing another person's number without their permission is not possible through official channels and would violate privacy law.

Does my Colorado driver's license number change when I renew?

No. Your number remains the same each time you renew your license, as long as you stay a Colorado resident. If you move out of state and later return to Colorado, you may receive a new number.

What should I do if I forgot my driver's license number?

Contact CDOT at 303-205-5613 with your name, date of birth, and address. They can provide your number over the phone or mail you a replacement card. You can also visit a local Driver Services office in person.

Is my driver's license number the same as my Colorado ID number?

No. If you have both a Colorado driver's license and a Colorado ID card, each has its own separate number. They are not interchangeable, though both are issued by CDOT.