Your registration number is printed on your registration card and displayed on your license plate
Your vehicle registration number — also called a registration plate number, license plate number, or plate number — is the combination of letters and numbers on the metal plate bolted to the front and back of your vehicle. It is also printed on your registration card, the document you receive from your state's motor vehicle department when you register your car.
The registration number is not the same as your Vehicle Identification Number (VIN), which is a 17-character code that identifies your specific car's make, model, and history. The registration number changes if you move to a different state or renew your registration; the VIN stays with the car for its entire life.
You need your registration number when you renew your registration, report a lost or stolen plate, file an insurance claim, or provide proof of registration to a police officer during a traffic stop.
Key Takeaways
- Your registration number appears on the metal license plate mounted on the front and rear of your vehicle.
- The same number is printed on your registration card, which you receive from your state's motor vehicle department.
- The registration number is different from your VIN and changes when you renew your registration or move states.
- You will need your registration number to renew your registration, report a stolen plate, or provide proof of registration to law enforcement.
Finding the number on your license plate
Look at the metal plate bolted to the front of your vehicle, just below the bumper or grille. In most states, this plate displays your registration number in a standard format: a combination of letters, numbers, or both, depending on your state's system. Some states use all numbers; others use letters followed by numbers, or a mix of both.
The rear plate (on the back of your vehicle) displays the same registration number. If your front plate is damaged, missing, or unreadable, the rear plate will have the same information. The plate also includes your state name and may display a county code or a special design if you have a vanity plate.
If your plate is obscured by dirt, snow, or damage, clean it or have it replaced. A registration number that cannot be read clearly can result in a traffic citation in most states.
Finding the number on your registration card
Your registration card is a small document, usually wallet-sized, that your state's motor vehicle department mails to you when you first register your vehicle or renew your registration. The registration number appears near the top of the card, often labeled as "License Plate Number," "Registration Number," or "Plate Number."
Keep your registration card in your vehicle at all times. In most states, you are required by law to carry proof of registration and show it to a police officer if you are stopped. The registration card is your proof of registration. If you cannot find your card, you can request a replacement from your state's motor vehicle department, usually for a small fee.
If you have lost your registration card, you can still see your registration number on your license plate. However, having the card is important because it also shows your vehicle's VIN, owner name, and registration expiration date — information you may need for insurance, repairs, or legal purposes.
What to do if your registration number is missing or damaged
If your license plate is missing, stolen, or so damaged that the number cannot be read, you must report it to your state's motor vehicle department and request a replacement plate. Most states allow you to report a missing or stolen plate online, by mail, or in person at a local motor vehicle office.
When you report a missing plate, you will receive a new plate with a new registration number. Your old registration number will no longer be valid. You will need to update your insurance company with the new plate number and may need to pay a replacement fee, which varies by state.
If your plate is damaged but still readable, you can continue to use it until your registration renewal. At renewal time, you can request a new plate as part of the renewal process. However, if the damage makes the number difficult to read, it is safer to request a replacement sooner rather than risk a traffic citation.
How registration numbers differ from VINs and other vehicle identifiers
Your registration number is temporary — it changes when you renew your registration or move to a different state. Your Vehicle Identification Number (VIN), by contrast, is permanent and unique to your specific car. The VIN is a 17-character code stamped into the frame of your vehicle and printed on your registration card, insurance documents, and title.
The VIN tells a mechanic or insurance company the exact year, make, model, and engine type of your car. The registration number tells the state which person or business owns the vehicle and whether that registration is current. They serve different purposes and are not interchangeable.
Your registration number is also different from your odometer reading, your vehicle's color, or any other descriptive information. When you renew your registration, your registration number may change, but your VIN and your car's physical characteristics remain the same.
Why you need to know your registration number
You need your registration number for several practical reasons. If you are stopped by a police officer, you must show proof of registration, which includes your registration number. If your registration has expired or you cannot produce proof, you may receive a citation.
When you renew your registration, you will use your registration number to look up your account online or to fill out a renewal form. If your plate is stolen or damaged, you will report the registration number to your state's motor vehicle department so they can issue a replacement.
Insurance companies also use your registration number to verify that your vehicle is registered and to match it with your policy. If you are involved in an accident or file a claim, the other party's insurance company may ask for your registration number to confirm your identity and vehicle ownership.
Keeping your registration card and plate in good condition
Store your registration card in a safe, dry place in your vehicle — a glove compartment or center console works well. Avoid leaving it in direct sunlight or extreme heat, which can fade the ink and make it harder to read. If your card becomes worn or illegible, request a replacement from your state's motor vehicle department.
Inspect your license plate regularly for damage, rust, or fading. If the numbers are becoming hard to read, clean the plate with soap and water. If cleaning does not help, or if the plate is cracked or bent, request a replacement. A clear, readable plate protects you from traffic citations and makes it easier for others to identify your vehicle in an emergency.
If you move to a different state, you will need to register your vehicle in your new state and receive a new registration number and plate. The process and timeline vary by state, so check your new state's motor vehicle department website for specific requirements.
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 — the combination of letters and numbers on your metal plate. Your state's motor vehicle department assigns this number when you register your vehicle, and it appears on both your plate and your registration card.
Can I look up my registration number online?
Most states allow you to look up your registration information, including your plate number, through your state's motor vehicle department website. You will typically need your VIN, driver's license number, or vehicle owner information to access your account. Some states charge a small fee for this service.
What happens if I get a new license plate?
If you request a new plate — because yours is damaged, stolen, or you want a vanity plate — you will receive a new registration number. Your old registration number will no longer be valid. You must update your insurance company and any other records with your new plate number.
Do I need my registration number to renew my registration?
You do not always need your registration number to start a renewal, but it helps. Most states allow you to renew using your VIN, driver's license number, or vehicle owner information. However, having your registration number or registration card makes the process faster and reduces the chance of errors.
What if my registration card is lost but I still have my plate?
You can see your registration number on your license plate. Request a replacement registration card from your state's motor vehicle department online, by mail, or in person. You will need to provide your VIN or other identifying information. Keep the replacement card in your vehicle, as you are required to carry proof of registration.