Your DMV number is a unique identifier assigned by your state's Department of Motor Vehicles that appears on your driver's license or ID card

Every state issues a DMV number — sometimes called a driver's license number, license number, or identification number — when you receive a driver's license or state ID card. This number is printed on the front of your card and stays with you as long as you hold that license or ID in that state. It is not the same as your Social Security number, and it is not portable if you move to another state.

The format, length, and what the number represents vary significantly by state. Some states use a sequence based on your name and birth date. Others use a random string of letters and numbers. A few states include encoded information about when your license was issued or will expire. Knowing what your number looks like and where to find it matters because you will need it for vehicle registration, insurance, traffic tickets, and many online transactions with your state DMV.

Key Takeaways

  • Your DMV number is printed on the front of your driver's license or state ID card and is unique to that card in that state.
  • The format differs by state — some use letters and numbers based on your name, others use random sequences — so your number will not transfer if you move.
  • You will need your DMV number to register a vehicle, update your address, renew your license, and handle most online transactions with your state DMV.
  • If you lose your card or forget your number, you can look it up through your state's DMV website, by phone, or by visiting a local office.

Where to find your DMV number on your card

Your DMV number appears on the front of your driver's license or state ID card, usually in the upper right or upper left corner. On older cards, it may be on the back. The number is printed clearly and is separate from any barcode or magnetic stripe on the card.

If your card is expired, lost, or you straightforward cannot locate it, the number is still yours — it does not change until you renew or replace the card. You can retrieve it by contacting your state DMV directly, logging into your state's online DMV portal if one exists, or visiting a local DMV office in person with proof of identity.

How DMV numbers differ by state

There is no national standard for DMV numbers, so each state designs its own system. Some states create numbers based on your last name, first name, and birth date — meaning two people with similar names and birth dates might have sequential numbers. Other states generate random alphanumeric strings that contain no personal information. A few states use numbers that encode your license class, issue date, or expiration date.

The length also varies. Some states use 8 digits, others use 9 or 10, and some use a mix of letters and numbers. If you move to a new state, you will receive a new DMV number on your new license — your old number from your previous state does not transfer and is no longer valid for that state's purposes.

When you need your DMV number

You will need your DMV number for vehicle registration, whether you are registering a new vehicle or renewing registration for one you already own. Insurance companies also ask for it when you quote or purchase a policy. If you receive a traffic ticket or are involved in an accident, your DMV number will appear on the citation or report.

Most state DMV websites require your DMV number to log into your account, renew your license online, update your address, or check the status of a request. Some states also ask for it when you explore for a commercial driver's license, a motorcycle endorsement, or a hazmat endorsement. If you are hiring a driver or running a background check, the DMV number is often part of the information requested.

Looking up your DMV number if you do not have it

If you cannot find your card or do not remember your number, start with your state's DMV website. Most states have an online lookup tool where you enter your name, date of birth, and sometimes your address, and the system returns your number. This is usually the fastest option and works 24 hours a day.

If your state does not offer online lookup, call your state DMV's customer service line. You will need to provide your name, date of birth, and address. Some states charge a small fee for this service; others do not. You can also visit a local DMV office in person with a government-issued ID, and staff can look up your number for you on the spot.

What to do if your DMV number changes

Your DMV number changes when you renew your license or get a replacement card — either because your old card was lost, stolen, or damaged, or because your state periodically reissues all licenses. When you receive your new card, the number on it is your new DMV number going forward. The old number is no longer valid.

If you have an active vehicle registration or insurance policy under your old number, you do not need to update it when ready, but it is a good idea to notify your insurance company and your state's vehicle registration system of the change. Most states allow you to update this information online through your DMV account or by mail. Some insurance companies update it automatically when they run a check against the DMV database.

DMV number versus other identification numbers

Your DMV number is different from your Social Security number, your vehicle identification number (VIN), and your license plate number. Your Social Security number is a federal identifier managed by the Social Security Administration. Your VIN is specific to a single vehicle and is used for registration, insurance, and recalls. Your license plate number changes if you get a new plate or move to a new state.

Some people confuse their DMV number with their state ID number if they hold a state ID card instead of a driver's license. These are the same thing — the number on your state ID card is your DMV number. If you hold both a driver's license and a state ID card, each has its own separate DMV number.

Frequently Asked Questions

What if I have a driver's license and a state ID card — do I have two DMV numbers?

Yes. Each card is issued separately and has its own unique DMV number. You would use the number from whichever card you are presenting for that transaction. Most people hold only one or the other, not both.

Can I use my DMV number from my old state if I move?

No. Your old DMV number is no longer valid once you move. You must get a new driver's license or state ID card in your new state, and you will receive a new DMV number. Your old state's number cannot be used for registration, insurance, or any transaction in your new state.

Is my DMV number the same as my license plate number?

No. Your DMV number is on your driver's license or ID card. Your license plate number is on your vehicle's plate and is used for registration and traffic enforcement. They are completely separate identifiers.

What should I do if someone asks for my DMV number online?

Be cautious. Legitimate government agencies and insurance companies do ask for your DMV number, but verify you are on an official website or speaking with an official representative before sharing it. Never give your DMV number to unsolicited callers or through links in emails or texts.

Can I change my DMV number if I do not like it?

No. Your DMV number is assigned by your state and cannot be changed on request. It only changes when you renew your license, get a replacement card, or move to a new state.