Is Butterfly Knives Legal in Illinois? (2026)
Yes — Butterfly Knives are legal in Illinois as of 2026.
Quick Answer
Butterfly knives are legal to own and carry in Illinois with no specific restrictions beyond general knife laws. No significant state-level changes, but municipalities continue to enact stricter local laws.
- Age restriction: 18+ for purchase
What the Law Says
Illinois state law is permissive, but many municipalities have stricter local ordinances. For example, Chicago bans the carry of knives with blades over 3 inches.
— 720 ILCS 5/24-1
| Category | Details |
|---|---|
| Possession | Legal |
| Sale & Purchase | Legal |
| Penalties | N/A |
| Age Restriction | 18+ for purchase |
| Pending Legislation | None known |
No significant state-level changes, but municipalities continue to enact stricter local laws.
Enforcement Reality
While legal to own, carrying a butterfly knife with a blade over 3 inches is illegal in many municipalities, including Chicago. State law is permissive, but local ordinances are strict.
The most common mistake is not being aware of local ordinances. A butterfly knife that is legal to carry in one town may be illegal in the next.
Local Exceptions
None identified. State law applies uniformly across Illinois. Local ordinances may still vary — check with your city or county government for any additional rules.
Bottom Line
Butterfly Knives are legal in Illinois. You can carry them without violating state law, though federal rules and local ordinances may still apply. Always verify current law before acting.
Illinois vs. the Rest of the US
Across the US, carrying a butterfly knife is fully legal in 39 states, restricted in 10, and illegal in 1. Illinois falls in the LEGAL category.
View the full 50-state map →Neighboring States
Laws change at state lines. Here is how bordering states compare on Butterfly Knives:
Frequently Asked Questions
Is it legal to carry Butterfly Knives in Illinois?
Can you carry a butterfly knife in Illinois?
What is the age restriction for carrying a butterfly knife in Illinois?
Does the law on carrying a butterfly knife change at the Illinois border?
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Reviewed by cross-referencing the cited state statute against current legislative databases and regulatory publications.
Sources & Verification
This page was reviewed by Ethan Harper by comparing the legal status against the cited state statute. AllowedHere is an informational resource and does not provide legal advice. Consult a licensed attorney for guidance specific to your situation.
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