Your registration number is printed on your registration card, your vehicle's license plate, and inside the driver's side door jamb

Your vehicle registration number — also called a registration plate number, license plate number, or plate number — appears in multiple places. The fastest place to look is your physical registration card, which you keep in your vehicle. It's also stamped on the metal or plastic plate bolted to the front and rear of your car. A third copy is usually printed inside the driver's side door jamb on a sticker, though this one fades over time and may not be readable on older vehicles.

If you've lost your registration card or can't read the plate, your state's Department of Motor Vehicles (DMV) or equivalent agency can print a replacement. You'll need your vehicle identification number (VIN) — a different code — to request it. The registration number itself is specific to your state and changes when you renew registration or move to a new state.

Key Takeaways

  • Your registration card, kept in your glove compartment, displays your registration number in large print and is the easiest place to check.
  • The metal or plastic plate on your vehicle's front and rear bumpers shows the same number and is visible from outside the car.
  • A faded sticker inside your driver's side door jamb may also show the number, though it becomes hard to read after several years.
  • If you cannot locate your registration number, contact your state DMV with your VIN to request a replacement registration card.

On your registration card

Your registration card is a wallet-sized document issued by your state's DMV when you register your vehicle. The registration number appears near the top or center of the card in large, bold text. Most states print it in the same format as it appears on your license plate — usually a combination of letters and numbers, though the exact format varies by state.

Keep this card in your vehicle at all times. It's a legal requirement in most states to have proof of registration with you while driving. If you've misplaced it, you can request a replacement from your state DMV online, by mail, or in person. Replacement cards typically cost between $5 and $15 and arrive within one to two weeks.

On your license plate

The registration number is the alphanumeric code displayed on your vehicle's license plate. Every state uses a different format — some start with letters followed by numbers, others alternate letters and numbers, and a few use all numbers. Your plate is bolted to the front of your vehicle and to the rear bumper (or rear panel on some vehicles).

If your plate is damaged, missing, or unreadable, you can order a replacement from your state DMV. Bring your registration card and proof of ownership. Replacement plates cost between $10 and $30 depending on your state, and you may be able to pick one up the same day at a DMV office or receive it by mail within one to two weeks.

On your door jamb sticker

Most vehicles have a registration sticker glued to the inside of the driver's side door jamb, just above where the door latches. This sticker contains your registration number along with other vehicle information like the VIN and gross vehicle weight rating. On newer vehicles, this sticker is usually readable for five to ten years. On older vehicles, sun exposure and moisture often fade it beyond legibility.

This sticker is not a legal requirement to carry with you, and you don't need to replace it if it fades. It's mainly a reference point for mechanics and inspectors. If you need to read it and it's too faded, your registration card or license plate will have the same number.

What to do if you can't find your registration number

If you've checked all three locations and still can't locate your registration number, you'll need to contact your state's DMV. Have your vehicle identification number (VIN) ready — it's a 17-character code stamped on your dashboard (visible through the windshield on the driver's side) or on your vehicle's title document. The DMV can look up your registration number using your VIN and vehicle owner information.

You can reach your state DMV through its website, by phone, or by visiting a local office. Some states allow you to look up your registration number online if you enter your VIN and last name. Others require a phone call or in-person visit. Once you confirm your registration number, you can order a replacement card if needed.

Difference between registration number and VIN

Your registration number (license plate number) and your VIN (vehicle identification number) are two separate codes that serve different purposes. Your registration number is assigned by your state and changes when you renew registration or move states. Your VIN is permanent — it's assigned to your vehicle at the factory and never changes, even if you sell the car or move to another state.

The registration number is what law enforcement uses to identify your vehicle on the road. The VIN is what insurance companies, mechanics, and title agencies use to track the vehicle's history and ownership. When you renew your registration, your registration number stays the same unless your state issues a new plate format. Your VIN remains the same for the life of the vehicle.

Frequently Asked Questions

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

Yes. Your registration number and license plate number are the same thing — they're the alphanumeric code printed on your plate. Different states use different formats, but the number on your plate is your registration number.

Do I need to memorize my registration number?

No. You only need to know where to find it quickly — on your registration card or license plate. You'll need it when renewing registration, filing an insurance claim, or reporting a stolen vehicle, but you don't need to memorize it for daily driving.

What if my registration number doesn't match on my plate and card?

Contact your state DMV when ready. A mismatch usually means one document is outdated or incorrect. Bring both your registration card and take a photo of your plate, and the DMV can correct the error or issue a replacement plate if needed.

Can I change my registration number?

You cannot choose a custom registration number in most states unless you pay extra for a vanity plate. When you renew your registration, your state typically assigns you the same number. If you move to a new state, you'll receive a new registration number in that state's format.

What should I do if my license plate is stolen?

Report it to your local police department and your state DMV. Bring your registration card and proof of ownership. The DMV will issue a replacement plate, usually within one to two weeks. You may be charged a replacement fee of $10 to $30 depending on your state.