Illinois boat registration is handled by the Department of Natural Resources, not your local Secretary of State office
The Illinois Department of Natural Resources (DNR) issues boat registrations for any motorized vessel or sailboat over 16 feet used on Illinois waters. Registration is required before you can legally operate the boat, and you'll need to renew it annually. The process is straightforward: you submit an process with proof of ownership, pay the registration fee, and receive a registration number that must be displayed on your boat's hull.
Registration does not transfer between owners. If you buy a used boat, the previous owner's registration ends with them — you must register it in your name before operating it. The same applies if you sell: the new owner registers it, not you.
Key Takeaways
- Illinois DNR handles all boat registration; you do not register through your county clerk or Secretary of State.
- Motorized boats and sailboats over 16 feet must be registered before use on any Illinois water.
- You can register online through the Illinois DNR website, by mail, or in person at a DNR office.
- Registration is valid for one year from the date issued and must be renewed annually to stay legal.
- The registration number must be painted or attached to the hull in a visible location.
What documents you need to register a boat
Start with proof of ownership. For a new boat, this is the manufacturer's certificate of origin or a bill of sale from the dealer. For a used boat, bring the previous registration or a bill of sale signed by the seller. If the boat has a title (some states issue them; Illinois does not always), bring that instead.
You'll also need the hull identification number (HIN), which is stamped into the boat's hull, usually on the starboard (right) side near the stern. Write this down before you start the registration process — you'll need it on the process.
If someone other than the owner will be the registered operator, bring a signed statement from the owner authorizing that person. This is common for family boats or business vessels.
How to register online, by mail, or in person
Online registration is the fastest route. Go to the Illinois DNR website, find the boat registration section, and complete the process form. You'll upload a photo or scan of your proof of ownership and pay the fee by credit or debit card. You should receive your registration number and temporary documentation within a few business days; the physical registration arrives by mail within two to three weeks.
By mail takes longer but works if you prefer paper. read the boat registration process from the DNR website, fill it out completely, and mail it with a copy of your proof of ownership and a check or money order for the fee. Mail it to the address listed on the form. Processing typically takes three to four weeks from the date they receive it.
In person at a DNR office gives you the fastest answer if something is wrong with your process. Bring the completed form, proof of ownership, and payment. Not all DNR offices handle boat registration, so call ahead to confirm the location nearest you accepts registrations. You can find office locations and hours on the Illinois DNR website.
Registration fees and how long registration lasts
The fee depends on the boat's length and type. A motorized boat under 16 feet costs less than a sailboat over 26 feet. The DNR website lists the current fee schedule by category — fees do change year to year, so check the current rates before you pay.
Registration is valid for one calendar year from the date it is issued. If you register in March, it expires the following March. You do not get to choose the expiration date. When renewal time comes, you'll receive a notice by mail (if the DNR has your current address), but you are responsible for renewing on time even if the notice does not arrive.
Renewing is the same process as registering: online, by mail, or in person. You can renew up to 30 days before expiration without penalty. If you let it lapse, you cannot legally operate the boat until you renew.
Where to display your registration number
Once you receive your registration, the number must be painted or permanently attached to both sides of the boat's hull in letters and numbers at least 3 inches tall. The number must be in a contrasting color so it is clearly visible from the water. Do not paint over it or cover it with a sticker or decal.
The registration decal (a sticker) goes on the boat as well, usually on the side of the hull near the registration number. The DNR will tell you exactly where when you receive your registration packet.
If your boat is damaged, stolen, or the registration number becomes illegible, contact the DNR to report it and request a replacement registration. You may have to pay a replacement fee.
What happens if your boat information changes
If you move to a new address, change the boat's name, or transfer ownership, you must notify the DNR. For an address change, you can usually update it online or by calling the DNR. For ownership transfer, the new owner must register the boat in their name — the old registration does not carry over.
If you sell the boat, keep a copy of the bill of sale for your records. You do not need to formally "deregister" it, but the new owner cannot use your registration. If the boat is not registered in someone's name within a reasonable time after sale, the DNR may try to contact you as the last registered owner, so make sure the buyer knows they need to register it themselves.
Frequently Asked Questions
Do I need boat registration if my boat is under 16 feet?
It depends on the motor. Sailboats under 16 feet do not need registration. Motorized boats under 16 feet do not need registration if the motor is 10 horsepower or less. If your boat is under 16 feet with a motor over 10 horsepower, you must register it. Check your motor's horsepower rating to be sure.
Can I register a boat I do not own yet?
No. You must have proof of ownership before the DNR will register it. If you are buying a boat, wait until the sale is complete and you have the bill of sale or title in hand. Then register it in your name before you use it on the water.
What if I lose my registration certificate?
Contact the Illinois DNR and request a replacement. You will need to provide your boat's HIN and proof of ownership. There is usually a replacement fee, and processing takes one to two weeks. Until you receive the replacement, you should not operate the boat legally.
Do I need a separate license to operate a boat in Illinois?
Illinois does not require a boating license for most operators, but you must complete a boating safety course if you were born on or after January 1, 1998. The course is free or low-cost and can be taken online. Check the Illinois DNR website for approved course providers.
How do I renew my registration if I have moved out of state?
You can renew by mail or online using your out-of-state address. Update your address with the DNR when you renew so they have your current location on file. If you no longer keep the boat in Illinois, you may want to check whether you still need an Illinois registration or if another state's registration applies.