
Boating is allowed in Illinois on Lake Michigan, the Missouri River, and many other popular boating destinations. To register a boat in Illinois, you need to complete a Watercraft Registration/Title Application (Form IL 422-0321). You can register your boat online, by phone, or by mail. You will also need to provide proof of purchase, such as the Manufacturer's Statement of Origin or the previous owner's title and registration. Once you apply for your Illinois boat registration, you will receive a registration number that must be displayed on your vessel.
| Characteristics | Values |
|---|---|
| Registration Number | Must be displayed on your vessel |
| Website | https://www.exploremoreil.com |
| Phone Number | (217) 557-0180 or (800) 382-1696 |
| Address | IDNR - Watercraft PO Box 19226 Springfield, IL 6794-9226 |
| Form | Watercraft Registration/Title Application (Form IL 422-0321) |
| Proof of Purchase | Manufacturer’s Statement of Origin or the previous owner’s title and registration |
| Other | You can also register your boat trailer at a Department of Motor Vehicles branch location or online |
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What You'll Learn

Registering online
To register your boat online in Illinois, you need to complete a Watercraft Registration/Title Application (Form IL 422-0321). You can do this online at https://www.exploremoreil.com. You will also need to provide proof of purchase, such as the Manufacturer's Statement of Origin or the previous owner's title and registration. You can also register your boat trailer online or at a Department of Motor Vehicles branch location.
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Registering by phone
To register your boat by phone in Illinois, you can call (217) 557-0180 or (800) 382-1696 to request a paper application. You will need to complete a Watercraft Registration/Title Application (Form IL 422-0321). You will also need to provide proof of purchase, such as the Manufacturer's Statement of Origin or the previous owner's title and registration.
Once you have completed the application and gathered the necessary documentation, you can mail your application and paperwork to the following address:
IDNR - Watercraft
PO Box 19226
Springfield, IL 6794-9226
Alternatively, you can register your boat trailer at a Department of Motor Vehicles branch location or online at https://www.exploremoreil.com.
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Registering by post
To register your boat by post in Illinois, you need to complete a Watercraft Registration/Title Application (Form IL 422-0321). You can request a paper application by calling (217) 557-0180 or (800) 382-1696. You will also need to provide proof of purchase, such as the Manufacturer's Statement of Origin or the previous owner's title and registration. Once you have the application and the required paperwork, you can mail them to the following address: IDNR - Watercraft, PO Box 19226, Springfield, IL 6794-9226.
Alternatively, you can register your boat trailer at a Department of Motor Vehicles branch location or online at https://www.exploremoreil.com.
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Filling out the Watercraft Registration/Title Application
To register a new boat in the state of Illinois, you need to complete a Watercraft Registration/Title Application (Form IL 422-0321)). This can be done online at https://www.exploremoreil.com or by calling (217) 557-0180 or (800) 382-1696 to request a paper application.
The Watercraft Registration/Title Application will ask for the following information:
- Your name and contact details, including your address and phone number.
- Details of the boat, including its make, model, and year.
- Proof of purchase, either the Manufacturer’s Statement of Origin or the previous owner’s title and registration.
- Information about the boat's intended use, including whether it will be used for commercial or recreational purposes.
- Details of any safety equipment on board, such as life jackets and flares.
Once you have completed the application, you can submit it online or mail it to:
IDNR - Watercraft
PO Box 19226
Springfield, IL 6794-9226
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Registering your boat trailer
To register your boat trailer in Illinois, you need to complete a Watercraft Registration/Title Application (Form IL 422-0321). You will also need to provide proof of purchase, such as the Manufacturer's Statement of Origin or the previous owner's title and registration. You can register your boat trailer at a Department of Motor Vehicles branch location or online at https://www.exploremoreil.com. Alternatively, you can call (217) 557-0180 or (800) 382-1696 to request a paper application, which can be mailed to IDNR - Watercraft, PO Box 19226, Springfield, IL 6794-9226, along with the required paperwork. Once you have applied for your Illinois boat registration, you will receive a registration number that must be displayed on your vessel.
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Frequently asked questions
You can register your boat online at https://www.exploremoreil.com or by calling (217) 557-0180 or (800) 382-1696 to request a paper application.
You need to complete a Watercraft Registration/Title Application (Form IL 422-0321) and provide proof of purchase.
You can mail your application to: IDNR - Watercraft, PO Box 19226, Springfield, IL 6794-9226.
Once your boat is registered, you can use the marina reservation app Dockwa to reserve short-term or seasonal slips, find marinas with availability, and see pricing.











































