Your registration number is printed on your vehicle registration card and on your license plate

Your registration number (also called a plate number or license plate number) is the unique identifier assigned to your vehicle. It appears in two places you can reach right now: on the physical license plate mounted on the front and back of your car, and on your vehicle registration card, which you should keep in your glove compartment or with your documents at home.

The registration number is a combination of letters and numbers specific to your vehicle. Every state uses a different format — some start with letters, some with numbers, and the length varies. Regardless of format, this number is how government agencies, insurance companies, and law enforcement identify your specific vehicle.

Key Takeaways

  • Your registration number appears on your physical license plate and on your vehicle registration card.
  • The registration card is usually kept in your glove compartment and shows your name, vehicle details, and the registration number.
  • If you have lost your registration card, your state's Department of Motor Vehicles can issue a replacement.
  • Your registration number is different from your Vehicle Identification Number (VIN), which is a longer code found on your dashboard and in your paperwork.

Finding the number on your license plate

Walk to the front or back of your vehicle and look at the metal or plastic plate bolted to the bumper or frame. The registration number is the combination of letters and numbers displayed on that plate. Write it down exactly as it appears, including any spaces or hyphens.

If your plate is damaged, faded, or missing, contact your state's Department of Motor Vehicles to request a replacement plate. You will need to provide proof of ownership and pay a replacement fee, which varies by state.

Finding the number on your registration card

Open your glove compartment or locate the folder where you keep your vehicle documents. Your registration card is a small document issued by your state's Department of Motor Vehicles. It displays your name, address, vehicle make and model, and the registration number — usually near the top or bottom of the card.

Keep this card in an accessible place. You are required to carry it when driving, and you will need it for insurance, vehicle sales, and renewal notices. If your card is lost or damaged, you can request a replacement from your state's DMV office online, by mail, or in person.

What to do if you cannot find your registration number

If you have lost both your license plate and your registration card, or if the number is illegible, contact your state's Department of Motor Vehicles directly. You can usually reach them through their website, by phone, or by visiting a local office. Bring proof of ownership — such as a bill of sale, loan documents, or insurance paperwork — and a photo ID.

The DMV can look up your registration number using your name, address, and vehicle details. They can also issue a replacement registration card on the spot or by mail, depending on your state's process. There is usually a small fee for a replacement card.

Understanding the difference between registration number and VIN

Your registration number and your Vehicle Identification Number (VIN) are not the same thing. The registration number is what appears on your license plate and registration card. The VIN is a longer code — typically 17 characters — that identifies the vehicle's manufacturer, model year, and production details.

You can find your VIN on your registration card, insurance documents, and on the dashboard of your vehicle (visible through the windshield on the driver's side). When you need your registration number for a specific purpose, make sure you are providing the plate number, not the VIN, unless you are specifically asked for the VIN.

When you need your registration number

You will need your registration number when renewing your registration, updating your address with the DMV, filing an insurance claim, selling your vehicle, or reporting a traffic violation. Insurance companies also use it to look up your policy and vehicle information. Keep a record of your registration number in a safe place, separate from your vehicle, so you can reference it if needed.

If you are buying or selling a vehicle, the registration number helps the buyer verify the vehicle's history and ownership. If you are involved in an accident, police and insurance adjusters will ask for this number to document the incident.

Frequently Asked Questions

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

Yes. The registration number and license plate number are the same thing. Both refer to the combination of letters and numbers on your plate. Your registration card displays this same number.

What if my license plate is obscured or hard to read?

If your plate is faded, damaged, or partially obscured, you can still find your registration number on your registration card. If the plate itself is damaged, contact your state's DMV to order a replacement plate. Driving with an illegible plate can result in a traffic citation.

Can I look up someone else's registration number?

In most states, registration information is public record, but access varies. Some states allow you to search online through the DMV website using a plate number. Others restrict access to law enforcement and authorized parties. Check your state's DMV website for their specific policy.

Do I need my registration number to renew my registration?

You will receive a renewal notice in the mail that includes your registration number. If you have lost the notice, you can look up your number on your registration card or by visiting your state's DMV website. Most states allow you to renew online using your registration number and driver's license number.