Assigned number format
Florida assigns numbers in the pattern FL 1234 AB, using the FL prefix. Florida is unusual because the validation decal is specifically displayed on the port side.
State Requirement Summary
Florida Boat Registration Number Requirements
Florida numbers follow the FL 1234 AB pattern and are displayed on the forward half of both sides of the vessel in block characters at least three inches tall. Florida is unusual in one respect worth planning for before you stick anything down: the validation decal is displayed on the port side, immediately before or after the registration number, so the two sides of the boat are not simply mirror images. Design your FL set below.
Boat number requirements
Last regulatory review: August 22, 2026
Assigned number example
FL 1234 AB
- Minimum character height
- 3 inches
- Lettering style
- Block characters
- Contrast
- Must contrast with the hull / background
- Spacing / separator
- Space or hyphen between prefix, numerals and suffix
- Reading direction
- Left to right
- Number location
- Forward half of both sides of the vessel
- Validation decal
- PORT / LEFT side only, immediately before or after the registration number
- State agency
- Florida Highway Safety and Motor Vehicles
What we sell vs. what the state issues: RegistrationDecals.com supplies the registration-number lettering, designed to meet the displayed Florida size and formatting requirements. Florida Highway Safety and Motor Vehicles 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 FL numbers
Starts with the Florida format (FL 1234 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 Florida requirements. Florida Highway Safety and Motor Vehicles issues the validation decal.
Florida placement diagram
Both sides of the hull carry the number. The grey square marks where the state-issued validation decal goes — port / left side only, immediately before or after the registration number.
- Height: 3 inches, block characters
- Spacing: Space or hyphen between prefix, numerals and suffix
- Location: Forward half of both sides of the vessel
- Validation decal: PORT / LEFT side only, immediately before or after the registration number
Diagram is illustrative. Confirm exact positioning against the instructions issued with your Florida registration.
Official source
Florida Highway Safety and Motor Vehicles — Primary state agency source. Last verified August 22, 2026 (source check 2026-08-22).
Florida Fish and Wildlife Conservation Commission — Boating regulationsRegistration 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.
Florida rules in detail
Minimum character height
Florida 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 with the hull / 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 between prefix, numerals and suffix. Example: FL 1234 AB. Running the groups together with no separation does not match the stated format.
Placement on the hull
Forward half of both sides of the vessel. The registration number must be clearly visible.
Validation decal placement
PORT / LEFT side only, immediately before or after the registration number. The validation or expiration decal is issued by Florida Highway Safety and Motor Vehicles — RegistrationDecals.com supplies the registration-number lettering only.
Common mistakes
- Ordering the number without the FL 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 prefix, numerals and suffix.
- Placing the state validation decal somewhere other than the position Florida describes: PORT / LEFT side only, immediately before or after the registration number.
- Assuming the validation decal goes on both sides — Florida displays it on the port side, immediately before or after the number.
- Choosing a decal color close to the hull color, which fails the contrast requirement in daylight.
Frequently asked questions
What does a Florida boat registration number look like?
Florida numbers follow the pattern FL 1234 AB, using the FL prefix, a numeral group, and suffix letters.
How tall do Florida boat registration numbers have to be?
3 inches, measured on the character itself, in block characters.
What lettering style does Florida require?
Block characters, reading left to right, and must contrast with the hull / background.
How much space goes between the letters and numbers in Florida?
Space or hyphen between prefix, numerals and suffix. Example: FL 1234 AB.
Where do the numbers go on the boat in Florida?
Forward half of both sides of the vessel. The registration number must be clearly visible.
Where does the Florida validation decal go?
PORT / LEFT side only, immediately before or after the registration number. The decal itself is issued by Florida Highway Safety and Motor Vehicles; we supply the registration-number lettering.
Who regulates boat registration numbers in Florida?
Florida Highway Safety and Motor Vehicles. Confirm the current instructions issued with your registration before applying anything to your hull. Last regulatory review: August 22, 2026.
Can I order Florida boat registration numbers online?
Yes. Enter your assigned FL 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 Florida registration numbers?
You need the number displayed on both sides of the vessel — forward half of both sides of the vessel — so every order ships as a matched port-and-starboard pair.
Which side does the Florida validation decal go on?
The port (left) side only, immediately before or after the registration number. The registration number itself goes on both sides.
Related guides
Ready to design your FL numbers?
Our designer starts with plain block characters and proper group spacing, so you can see exactly how FL 1234 AB will read on your hull before you order.
Source: Florida Highway Safety and Motor Vehicles · 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.