How many letters a custom license plate can have depends on your state, but most U.S. states allow between two and eight characters on a personalized plate, with seven being the most common upper limit for standard passenger vehicles. Motorcycle plates and specialty designs with graphics almost always allow fewer.
Standard Passenger Plates
A typical state caps personalized passenger plates at seven characters. Some states go up to eight, and a few stop at six. The plate itself is the same size everywhere: 12 inches by 6 inches, following dimensions set by AAMVA and SAE International. The variation in character count comes from how each state’s DMV divides that space between state branding, graphics, and your text.
Motorcycle Plates
Motorcycle plates are physically smaller, so they hold fewer characters. Most states allow five or six on a personalized motorcycle plate. A clever seven-letter message that would fit on a car plate usually will not fit on a bike.
Specialty and Graphic Plates
Specialty plates carrying emblems, logos, or cause-related artwork cut into your character count further. In a state that normally allows seven characters on a standard plate, the same design with a graphic may only allow six. Some specialty motorcycle plates drop as low as five. Check the specific plate style you want before settling on a combination, because the graphic reduces the space available for text.
What Counts as a Character
Letters A through Z and numerals 0 through 9 are universal. The rules diverge from there.
Spaces are widely allowed and almost always count as one character. A plate reading “MY CAR” uses six characters, not five. States that permit both spaces and hyphens usually limit you to one separator per plate, and some make you pick between a space or a hyphen rather than using both.
A handful of states go further and allow symbols such as ampersands, pound signs, question marks, dollar signs, plus signs, periods, and apostrophes. Some occupy a full character slot. Narrower marks like periods or apostrophes may count as only half a character in states that use fractional spacing, which can let you squeeze in an extra letter.
One quirk to know: special characters usually do not affect availability. A plate reading “A&B” and one reading “AB” are treated as the same combination in states with this policy. The symbol is cosmetic. You cannot use it to claim a combination someone else already owns.
What Your State Will Reject
Every state reviews personalized plate applications for content, and every state rejects messages that are profane, obscene, sexually explicit, or discriminatory. Messages referencing illegal activity, gang affiliations, or violence are also off the table. The U.S. Supreme Court ruled in 2015 that license plate designs constitute government speech, giving states broad legal authority to control what appears on them without First Amendment problems.1Justia Law. Walker v. Tex. Div., Sons of Confederate Veterans, Inc., 576 U.S. 200
States maintain lists of banned words and character combinations, and those lists get updated as new slang emerges. Automated screening flags questionable applications during the ordering process, and flagged requests go to a human reviewer for a final call. Some of those lists are longer than you would expect.
Beyond offensive content, states also reject combinations that could be confused with government or law enforcement plates, duplicate an existing plate, or spell out emergency codes. Combinations that look like gibberish may also be rejected if reviewers suspect they encode a hidden message through letter-number substitution. Obvious swaps like a zero for the letter O in a banned word are commonly blocked by the same filter that catches the plain spelling.
Check Availability Before You Commit
Nearly every state DMV offers an online availability checker. Type your desired combination in and see whether it is taken or flagged, instantly and for free. Run your top few ideas in the same sitting, because the most popular words and short phrases were claimed years ago.
Shorter combinations are the hardest to get. A three-character plate is close to a lottery ticket in most states because so few exist. You will have better odds in the five-to-seven character range, where the number of possible combinations is far larger. If your first choice is taken, creative spellings or numeric substitutions may work, but remember that the automated filter catches many of the obvious ones.
Quick Reference
- Standard passenger plates: usually up to seven characters, sometimes six or eight.
- Motorcycle plates: usually five or six characters.
- Specialty or graphic plates: typically one fewer character than the standard plate in the same state.
- Spaces: allowed in most states and counted as a full character.
- Symbols and punctuation: allowed in some states, sometimes counted as a half character, and generally ignored for availability purposes.