State Requirement Summary

Wyoming Boat Registration Number Requirements

Boats registered in Wyoming display a WY-prefixed number such as WY 3717 A. Wyoming calls for characters 3 inches, excluding shading or border high in plain vertical block characters; not slanted, reading left to right, sharp contrast with background, positioned exterior bow on the port and starboard sides. Our lettering is designed to meet the displayed Wyoming 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

WY 3717 A

Minimum character height: 3 inches, excluding shading or border
Lettering style: Plain vertical block characters; not slanted
Contrast: Sharp contrast with background
Spacing / separator: Space or hyphen
Reading direction: Left to right
Number location: Exterior bow on the port and starboard sides
Validation decal: Apply the registration decal in accordance with current WGFD registration materials
State agency: Wyoming Game and Fish Department

What we sell vs. what the state issues: RegistrationDecals.com supplies the registration-number lettering, designed to meet the displayed Wyoming size and formatting requirements. Wyoming Game and Fish Department 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 WY numbers

Starts with the Wyoming format (WY 3717 A). 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 Wyoming requirements. Wyoming Game and Fish Department issues the validation decal.

Wyoming placement diagram

Both sides of the hull carry the number. The grey square marks where the state-issued validation decal goes — apply the registration decal in accordance with current wgfd registration materials.

Port side — bow to the left

Starboard side — bow to the right

Height: 3 inches, excluding shading or border, plain vertical block characters; not slanted
Spacing: Space or hyphen
Location: Exterior bow on the port and starboard sides
Validation decal: Apply the registration decal in accordance with current WGFD registration materials

Diagram is illustrative. Confirm exact positioning against the instructions issued with your Wyoming registration.

Official source

Wyoming Game and Fish Department — Primary state agency source. Last verified August 22, 2026 (source check 2026-08-22).

Wyoming Game and Fish Department — Boating

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.

Wyoming rules in detail

Assigned number format

Wyoming assigns numbers in the pattern WY 3717 A, using the WY prefix. Wyoming separately requires an aquatic-invasive-species decal.

Minimum character height

Wyoming specifies characters 3 inches, excluding shading or border 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

Plain vertical block characters; not slanted, reading left to right. Script, italic and decorative treatments are not what this style describes.

Contrast requirement

Sharp contrast with background. 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. Example: WY 3717 A. Running the groups together with no separation does not match the stated format.

Placement on the hull

Exterior bow on the port and starboard sides. No other numbers in the bow registration area.

Validation decal placement

Apply the registration decal in accordance with current WGFD registration materials. The validation or expiration decal is issued by Wyoming Game and Fish Department — RegistrationDecals.com supplies the registration-number lettering only.

Common mistakes

Ordering the number without the WY prefix or the suffix letters.
Characters shorter than the stated minimum (3 inches, excluding shading or border) so they fit inside a narrow accent stripe.
Using a script, italic or shadowed style instead of plain vertical block characters; not slanted.
Losing the required separation between the groups — space or hyphen.
Placing the state validation decal somewhere other than the position Wyoming describes: apply the registration decal in accordance with current WGFD registration materials.

Frequently asked questions

What does a Wyoming boat registration number look like?

Wyoming numbers follow the pattern WY 3717 A, using the WY prefix, a numeral group, and suffix letters.

How tall do Wyoming boat registration numbers have to be?

3 inches, excluding shading or border, measured on the character itself, in plain vertical block characters; not slanted.

What lettering style does Wyoming require?

Plain vertical block characters; not slanted, reading left to right, and sharp contrast with background.

How much space goes between the letters and numbers in Wyoming?

Space or hyphen. Example: WY 3717 A.

Where do the numbers go on the boat in Wyoming?

Exterior bow on the port and starboard sides. No other numbers in the bow registration area.

Where does the Wyoming validation decal go?

Apply the registration decal in accordance with current WGFD registration materials. The decal itself is issued by Wyoming Game and Fish Department; we supply the registration-number lettering.

Who regulates boat registration numbers in Wyoming?

Wyoming Game and Fish Department. Confirm the current instructions issued with your registration before applying anything to your hull. Last regulatory review: August 22, 2026.

Can I order Wyoming boat registration numbers online?

Yes. Enter your assigned WY 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 Wyoming registration numbers?

You need the number displayed on both sides of the vessel — exterior bow on the port and starboard sides — so every order ships as a matched port-and-starboard pair.

Related guides

Ready to design your WY numbers?

Our designer starts with plain block characters and proper group spacing, so you can see exactly how WY 3717 A will read on your hull before you order.

Source: Wyoming Game and Fish Department · Primary state agency source · Primary agency for the registration/AIS program; number-display rule cross-checked against Wyoming rule text · Source last checked 2026-08-22.