Assigned number format
Oregon assigns numbers in the pattern OR 123 AB, using the OR prefix. Motorboats and sailboats 12 feet and longer generally require Oregon title/registration.
State Requirement Summary
Oregon Boat Registration Number Requirements
Boats registered in Oregon display an OR-prefixed number such as OR 123 AB. Oregon calls for characters 3 inches high in block characters, reading left to right, must contrast, positioned both sides of the forward half. Our lettering is designed to meet the displayed Oregon size and formatting requirements. The state itself issues the validation/expiration decal — we supply the registration-number lettering.
Boat number requirements
Last regulatory review: August 22, 2026
Assigned number example
OR 123 AB
- Minimum character height
- 3 inches
- Lettering style
- Block characters
- Contrast
- Must contrast
- Spacing / separator
- Space or hyphen between groups
- Reading direction
- Left to right
- Number location
- Both sides of the forward half
- Validation decal
- Follow the current Oregon State Marine Board placement graphic
- State agency
- Oregon State Marine Board
What we sell vs. what the state issues: RegistrationDecals.com supplies the registration-number lettering, designed to meet the displayed Oregon size and formatting requirements. Oregon State Marine Board issues the official validation/expiration decal — and any separate stickers such as aquatic-invasive-species, mussel-awareness, carbon-monoxide or lake-protection stickers, which are not interchangeable with each other.
Design your OR numbers
Starts with the Oregon format (OR 123 AB). Tap the decal and type your own assigned number exactly as it appears on your certificate of number.
Tap the decal to edit
Decal color
We supply the registration-number lettering, sized to the displayed Oregon requirements. Oregon State Marine Board issues the validation decal.
Oregon placement diagram
Both sides of the hull carry the number. The grey square marks where the state-issued validation decal goes — follow the current oregon state marine board placement graphic.
- Height: 3 inches, block characters
- Spacing: Space or hyphen between groups
- Location: Both sides of the forward half
- Validation decal: Follow the current Oregon State Marine Board placement graphic
Diagram is illustrative. Confirm exact positioning against the instructions issued with your Oregon registration.
Official source
Oregon State Marine Board — Primary state agency source. Last verified August 22, 2026 (source check 2026-08-22).
Oregon State Marine Board — Boater informationRegistration requirements can change. RegistrationDecals.com summarizes publicly available boating-registration requirements to help boat owners select and display registration numbers. Always compare your registration and decals with the current instructions issued by your state boating or registration agency before applying them to your vessel.
Oregon rules in detail
Minimum character height
Oregon specifies characters 3 inches high. Measure the character body itself — if the state excludes borders, outlines or shading, decorative trim does not count toward the minimum.
Required lettering style
Block characters, reading left to right. Script, italic and decorative treatments are not what this style describes.
Contrast requirement
Must contrast. In practice that means dark characters on a light hull and light characters on a dark hull, checked in daylight from the side of the vessel.
Spacing and separator
Space or hyphen between groups. Example: OR 123 AB. Running the groups together with no separation does not match the stated format.
Placement on the hull
Both sides of the forward half. Assigned registration number only.
Validation decal placement
Follow the current Oregon State Marine Board placement graphic. The validation or expiration decal is issued by Oregon State Marine Board — RegistrationDecals.com supplies the registration-number lettering only.
Common mistakes
- Ordering the number without the OR prefix or the suffix letters.
- Characters shorter than the stated minimum (3 inches) so they fit inside a narrow accent stripe.
- Using a script, italic or shadowed style instead of block characters.
- Losing the required separation between the groups — space or hyphen between groups.
- Placing the state validation decal somewhere other than the position Oregon describes: follow the current Oregon State Marine Board placement graphic.
Frequently asked questions
What does a Oregon boat registration number look like?
Oregon numbers follow the pattern OR 123 AB, using the OR prefix, a numeral group, and suffix letters.
How tall do Oregon boat registration numbers have to be?
3 inches, measured on the character itself, in block characters.
What lettering style does Oregon require?
Block characters, reading left to right, and must contrast.
How much space goes between the letters and numbers in Oregon?
Space or hyphen between groups. Example: OR 123 AB.
Where do the numbers go on the boat in Oregon?
Both sides of the forward half. Assigned registration number only.
Where does the Oregon validation decal go?
Follow the current Oregon State Marine Board placement graphic. The decal itself is issued by Oregon State Marine Board; we supply the registration-number lettering.
Who regulates boat registration numbers in Oregon?
Oregon State Marine Board. Confirm the current instructions issued with your registration before applying anything to your hull. Last regulatory review: August 22, 2026.
Can I order Oregon boat registration numbers online?
Yes. Enter your assigned OR number in the designer on this page, pick a color that contrasts with your hull, and we cut a matched port-and-starboard pair and ship it to the 48 contiguous states.
Do I need two sets of Oregon registration numbers?
You need the number displayed on both sides of the vessel — both sides of the forward half — so every order ships as a matched port-and-starboard pair.
Related guides
Ready to design your OR numbers?
Our designer starts with plain block characters and proper group spacing, so you can see exactly how OR 123 AB will read on your hull before you order.
Source: Oregon State Marine Board · Primary state agency source · Primary · Source last checked 2026-08-22.
Registration requirements can change. RegistrationDecals.com summarizes publicly available boating-registration requirements to help boat owners select and display registration numbers. Always compare your registration and decals with the current instructions issued by your state boating or registration agency before applying them to your vessel.