Your driver license customer number is a unique identifier your state's DMV assigns to you when you first get a license
It is different from your license number itself. While your license number changes each time you renew, your customer number stays the same for life. Think of it as your permanent file number at the DMV — the number that links all your driving records, violations, renewals, and address changes together in one place.
You will see your customer number printed on your physical license, usually in small type. It is also called a customer ID, driver record number, or document number depending on your state. When you call the DMV, renew online, or request your driving record, you will often need this number to prove who you are and pull up your file quickly.
The customer number is not the same as your Social Security number, license number, or state ID number. It exists only within your state's DMV system. If you move to another state, you will get a new customer number when you explore for that state's license.
Key Takeaways
- Your customer number is a permanent identifier assigned by your state DMV that stays the same throughout your driving life, even when your license number changes at renewal.
- The customer number appears on your physical license and is used by the DMV to locate your complete driving record and history in their system.
- You will need your customer number when renewing your license online, requesting your driving record, or calling the DMV with questions about your account.
- Each state maintains its own customer number system, so moving to a new state means you will receive a new customer number with your new license.
Where to find your customer number on your license
Your customer number is printed directly on your physical driver license card. The exact location and format varies by state, but it is usually a string of numbers in smaller print, often near the bottom of the front or back of the card.
Some states print it prominently; others tuck it in a corner. If you cannot locate it on your card, check your renewal notice or the paperwork you received when you first got your license. The DMV often includes the customer number in official correspondence.
If you have lost your license or cannot find the number anywhere, you can contact your state DMV directly and provide your name, date of birth, and address. They will look up your customer number in their system and read it to you over the phone.
When you will need your customer number
The most common reason you will need your customer number is to renew your license online. Most states now offer online renewal, and the system asks for your customer number to pull up your existing record and confirm your identity before processing the renewal.
You will also need it if you request an official copy of your driving record — the document that shows your license status, any violations, accidents, or suspensions. Insurance companies, employers, and courts sometimes ask for this record, and the DMV uses your customer number to locate the correct file.
Calling the DMV with questions about your account, scheduling a road test, or updating your address also often requires your customer number. Having it ready speeds up the process because the representative can pull your file when ready instead of searching by name alone.
How your customer number differs from your license number
Your license number is the main identifier printed on your card — the number most people think of as their "license number." It changes every time you renew your license. Your customer number, by contrast, never changes.
Think of it this way: your license number is like the serial number on a specific piece of paper. When that paper expires and you get a new one, you get a new serial number. Your customer number is like your name in the filing cabinet — it stays the same no matter how many times you renew the paper inside.
This matters because the DMV uses your customer number to connect all your records across decades. A violation from 2015, a renewal in 2018, and a name change in 2022 are all linked under the same customer number. If the DMV only used your license number, each renewal would look like a brand new person with no history.
What happens to your customer number if you move states
Your customer number is specific to your state's DMV system and does not transfer. When you move to a new state and explore for a new driver license, that state's DMV will assign you a brand new customer number.
Your old state's records remain in their system under your old customer number, but you will not use that number anymore. The new state has no access to your old customer number and does not need it. They will request your driving record from your previous state if they need to see your history, but that request happens behind the scenes using your name and date of birth.
You do not need to do anything special to transfer your customer number — it straightforward does not happen. Just explore for your new state's license as a new driver in that state's system, and you will receive a new customer number.
How to look up your customer number if you have lost it
If you cannot find your customer number on your license or in your paperwork, contact your state DMV directly. You can usually reach them by phone, and they can look up the number in seconds using your name and date of birth.
Some states also allow you to look up your customer number online through their DMV website. You may need to log into a portal or enter personal information like your license number, Social Security number, and date of birth. Check your state's DMV website for a "look up your record" or "find your customer number" tool.
If you are renewing your license online and the system asks for your customer number but you do not have it, most states offer an alternative. You can usually enter your license number instead, or call the DMV before you start the renewal to get your customer number.
Why the DMV uses customer numbers instead of just your name
Using a unique number instead of relying on your name makes the DMV's system faster and more accurate. Two people named John Smith might live in the same state, but they will have different customer numbers. This prevents the DMV from accidentally pulling the wrong person's record.
A customer number also works the same way whether you have a common name or an uncommon one, and it does not change if you get married, divorced, or legally change your name. Your customer number stays constant even if your name in the system changes, so your entire driving history remains connected.
From a practical standpoint, customer numbers also speed up phone calls and online transactions. Instead of spelling out your name and confirming your date of birth, you can straightforward give a number. It is faster for you and faster for the DMV representative helping you.
Frequently Asked Questions
Is my customer number the same as my license number?
No. Your license number changes each time you renew your license, but your customer number stays the same for life. Your customer number is your permanent file identifier at the DMV, while your license number is specific to that particular license card.
Do I need my customer number to renew my license in person?
Not always. If you renew in person at a DMV office, you can bring your old license or ID and the staff will look you up by name. However, if you renew online or by mail, you will usually need your customer number to confirm your identity and pull up your record.
What if I cannot find my customer number before I renew online?
Call your state DMV and provide your name and date of birth. They will give you your customer number over the phone. You can also check your renewal notice or any recent correspondence from the DMV — the customer number is often printed there.
Can I use my customer number from my old state if I move?
No. Each state has its own DMV system and customer number database. When you get a new license in your new state, you will receive a new customer number. Your old state's records stay in their system but are not connected to your new state's license.
Where exactly is the customer number printed on my license?
The location varies by state, but it is usually in small print on the front or back of your license card, often near the bottom. Check your state's DMV website or call them if you cannot locate it on your card.