Knife Laws in Washington State (2026): What’s Legal and What’s Not

Most people don’t realize how much the knife laws in Washington have changed. Seriously. If you’re carrying a knife in Washington, you need to know the rules. They’re stricter than you might think. Let’s break down exactly what you need to know to stay on the right side of the law.

This is especially important right now because the state just changed some of its biggest knife rules in 2025. These changes affect what you can and can’t carry. Get this wrong, and you could face serious criminal charges. Stay with me here.

What Is a Knife Under Washington Law?

Washington’s knife laws cover a lot of different blades. The state cares about how you carry a knife and where you carry it, not just the knife itself. But some specific types of knives are always illegal to own.

Think of it like traffic laws. The state sets a baseline rule. But then your city can make things stricter. What’s legal in one town might be illegal just down the road. That’s why you need to check both state law and your local rules.

The Big 2025 Change: Spring Blade Knives Are Now Legal

Hold on, this part is important. Okay, pause. Read this carefully. Starting July 1, 2025, Washington made spring blade knives (also called switchblades) legal to own and carry. This is a huge change. For decades, these knives were illegal. Now they’re not.

A spring blade knife is any knife where the blade opens automatically. It opens with a spring mechanism. It could open by gravity or mechanical force too. If it moves by itself when you push a button, it’s a spring blade knife.

Here’s the catch. There’s one type of spring blade that was already legal: assisted-opening knives. These require you to push the blade partway. Then the spring takes over. These have always been allowed under Washington law. So this 2025 change is really big for people who wanted true automatic knives.

The new law treats spring blades like regular pocket knives. You can carry them openly in most places now. But they’re still banned in certain sensitive locations. We’ll get to that in a moment.

What Knives Are Still Illegal

Not all knives are legal in Washington. Some types remain completely banned, no matter what. These are:

Gravity knives are still illegal. These knives have a blade that drops open by gravity alone. Butterfly knives (also called balisong knives) remain banned. These knives have handles that flip around the blade. Metal knuckle knives are also prohibited. These weapons have spikes or sharp points on the knuckles.

Wondering if your knife counts? Compare it to these categories. If your knife fits one of them, you probably can’t own it in Washington.

Open Carry vs. Concealed Carry

This is where things get tricky. Washington law treats open carry and concealed carry very differently. Open carry is generally allowed. Concealed carry is not.

Open Carry of Legal Knives

You can carry most knives openly in Washington. This means the knife is visible. It’s not hidden under your clothes or in a pocket where people can’t see it. Yep, that’s all you need.

Bowie knives, hunting knives, fixed blade knives, and regular folding knives are fine to carry openly. Most people won’t even notice. You’re good to go in most situations.

The spring blade knife change means automatic knives are now open carry legal too. This is huge for people who wanted these knives. Before July 2025, you couldn’t even own one. Now you can carry it right on your hip.

Concealed Carry of Knives

This is where the state gets serious. You can’t conceal carry most knives in Washington. If you want to hide a knife on your person, there are strict rules.

Concealing a knife with a blade longer than 3.5 inches is illegal. There are some exceptions. You can conceal a larger knife if you’re hunting or fishing. You can do it if it’s part of your job. But in normal everyday situations? No.

The law also says you can’t “furtively carry” a dagger or dirk. Furtively means sneakily or secretly. If the police think you’re hiding it on purpose, you could face charges.

Not sure what counts as concealed? Here’s the test. Can a reasonable person see the knife without you showing it to them? If no, it’s concealed.

Local Laws Make Things Even Stricter

Okay, here’s where it gets complicated. Seattle, Tacoma, and Vancouver have their own knife laws. These cities are stricter than the state. In these cities, the blade limit is only 3.5 inches for open carry. That’s the limit for what counts as concealed carry statewide.

Some downtown areas are even stricter than their cities. Always check before you carry. Call your city hall if you’re not sure. It’s better to ask than to get arrested.

This is probably the part most people miss. You could follow state law perfectly and still break your city’s rules.

Where You Can’t Carry Knives

Washington law bans knives from certain locations entirely. No exceptions. No matter what kind of knife you have.

Schools

You can’t bring any knife onto a K-12 school’s property. This includes the parking lot. This includes school buses. There are no exceptions. Schools take this seriously. Zero tolerance means zero tolerance.

If you’re a student and you carry a knife to school, you could face criminal charges. You could be expelled. It’s not worth the risk.

Public Transit Stations

As of June 2024, you can’t carry any knife at transit stations. This includes bus stops, train stations, and trolley stops. This is any knife, any length, any type. Open or concealed doesn’t matter.

This rule was recently added by Senate Bill 5444. Many people don’t know about it yet. But it’s the law. A friendly heads up: many people get this one wrong.

Government Buildings and Facilities

You can’t carry knives into courthouses. You can’t bring them into police stations or jails. You can’t take them into correction facilities. These places ban them for security reasons.

Also banned: any area off-limits to people under 21 by the state liquor and cannabis board. This includes most bars and liquor stores.

Other Restricted Places

Law enforcement facilities and mental health facilities ban knives. Licensed childcare centers ban them too. You also can’t bring knives to permitted demonstrations or large public gatherings.

If a place has a posted sign saying no weapons, follow it. Private property owners can set their own rules.

Penalties and Consequences

What happens if you break Washington’s knife laws? The penalties are serious. This is where things get real.

Manufacturing, selling, or possessing illegal knife types is a gross misdemeanor. Let me explain what that means. A gross misdemeanor is a serious crime. It’s worse than a regular misdemeanor but not quite a felony.

For a gross misdemeanor in Washington, you could face up to 364 days in jail. That’s almost a full year. You could also face a fine up to $5,000. The court can give you both jail time and a fine. That adds up fast.

Concealing a knife “furtively” (meaning you’re trying to hide it from police or others) is also a gross misdemeanor. Same penalties. Up to 364 days and up to $5,000.

Using a knife to intimidate or threaten someone? That’s worse. You could face assault or weapons charges. These are felonies. Felonies mean prison time, not just jail time.

Here’s what you need to know: a criminal record for knife violations can follow you forever. It affects your job options. It affects housing. It affects loans. Getting convicted is expensive in ways that go way beyond the fine.

Using a Knife to Intimidate Is Extra Serious

Let’s talk about this carefully. Carrying a knife one way is legal. Carrying it with intent to scare people? That’s illegal.

Washington law says you can’t carry any knife in a way that intimidates others or causes alarm for their safety. You can’t display it to threaten someone. You can’t draw it in a threatening manner.

The difference matters. Wearing a hunting knife on your belt openly? That’s fine. Pulling a knife during an argument? That’s a crime. A big one.

If you display a knife in a threatening way, you could face gross misdemeanor charges. Or worse, assault charges. Don’t do this. Not ever.

What About Minors and Knives?

Here’s something parents need to know. Washington has no minimum age to purchase a knife. A kid can technically buy a knife. But carry rules are different.

Anyone under 18 faces restrictions on carrying dangerous weapons without adult supervision. Minors can’t carry knives in places where it could cause alarm. Schools have a strict zero-tolerance policy for minors with knives.

Many stores refuse to sell knives to minors as a matter of policy. This is smart. Some local cities have extra rules about minors carrying knives too.

Parents should teach kids about knife safety and the law. A curious teenager carrying a knife to school could end up with a criminal record. That’s life-changing.

What Doesn’t Change: Intent and Responsibility

Here’s the bottom line. Washington’s knife laws focus on how you use knives and where you carry them. Carrying a knife responsibly? Not against the law. Carrying it to scare people or in a dangerous way? That’s a crime.

Your intent matters. The circumstances matter. Where you are matters. When you carry it matters. All these things come into play.

The law isn’t trying to keep people from having knives. It’s trying to keep people safe. It wants knives used for their real purposes: hunting, fishing, camping, or work. Not for intimidation or violence.

Special Situations: Hunting, Fishing, and Work

Okay, let’s clarify some exceptions. If you’re hunting or fishing, you can carry larger knives concealed. Your lawful purpose protects you.

The same goes if it’s part of your job. A butcher can carry knives. A chef can carry knives. A construction worker might need a knife for work. These people have legal reasons.

Law enforcement and military personnel are also exempt from some restrictions. Their training and badge come with certain exceptions.

If your knife carries are for lawful purposes, you’re likely in the clear. But that purpose has to be real, not made up.

How to Stay Out of Trouble

Here’s what you need to do to carry knives safely and legally in Washington.

First, know your knife. Is it a prohibited type? If you’re not sure, don’t carry it. Check the list above. Look up your specific knife online. Better safe than sorry.

Second, know your location. Are you in a school zone? A transit station? A courthouse? A restricted location? If yes, leave the knife home. No knife is worth a criminal record.

Third, carry openly if you’re unsure. Open carry is usually fine. Concealed carry is where problems happen. If your knife is visible, you’re less likely to have legal trouble. People can see it’s not hidden.

Fourth, check local laws for your city. Seattle and Tacoma have stricter rules. Your town might too. One phone call to city hall takes five minutes. One arrest takes months and costs thousands.

Fifth, never use a knife to threaten or intimidate. Not joking. Not for protection. Not for any reason. That’s when everything goes wrong fast.

Special Alert: Recent Changes Mean You Need to Update Your Knowledge

Remember, spring blade knives are brand new legal as of July 1, 2025. Many people still think they’re illegal. Many police officers might not be caught up with the new law. If you carry a spring blade, have proof the law changed. Have it on your phone.

This new law is so recent that some confusion still exists. You could get stopped by an officer who doesn’t know about the change. Stay calm. Show them the law. Know the effective date.

Frequently Asked Questions

Can I carry a knife for self-defense?

No, not really. Washington law doesn’t have a “self-defense knife” exception. If you’re using a knife to threaten someone, that’s a crime. The only self-defense exception is if you’re actually being attacked right then. Even then, you could face assault charges if you use it. Self-defense with weapons in Washington is complicated. Talk to a lawyer if you want details.

Are butterfly knives legal in Washington?

No, butterfly knives (balisong knives) remain illegal in Washington. This didn’t change in 2025. The only knives that became legal were spring blade knives. Butterfly knives are still banned.

Can I carry a pocket knife in Washington?

Yes, in most places. Regular pocket knives with blades under 3.5 inches are generally fine to carry openly. You can’t conceal carry larger pocket knives unless you have a lawful reason. Check your city’s local laws too.

What’s the difference between a spring blade knife and an assisted-opening knife?

A spring blade knife opens automatically with no hand effort. An assisted-opening knife requires you to push the blade partway. Then the spring finishes opening it. Assisted-opening knives were already legal. Spring blades just became legal July 1, 2025.

What should I do if a police officer asks about my knife?

Stay calm. Be polite. Don’t lie. If the knife is legal, explain that. If you’re not sure, ask to speak to a lawyer. You have the right to remain silent. You have the right to legal representation. Use both if you need them.

Final Thoughts

Now you know the basics of Washington’s knife laws. These laws changed a lot in 2025 with spring blade knives becoming legal. But plenty of rules still apply. Know where you can’t carry. Know what types are illegal. Know that using a knife to threaten is serious.

Here’s the truth: most people are fine with knives. The law protects lawful knife owners. It punishes people who use knives for violence or threats. You can carry a knife in Washington. Just do it responsibly and follow the rules.

Stay informed. Stay safe. When in doubt, look it up or ask a lawyer. One quick question beats a criminal record any day.

References

• Washington State Legislature – RCW 9.41.250 Dangerous Weapons Penalty
• Washington State Legislature – RCW 9.41.270 Weapons Apparently Capable of Producing Bodily Harm
• [Washington State Legislature – Senate Bill 5534 Spring Blade Knives (2025)](https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bill Reports/Senate/5534 SBR LAW OC 25.pdf)
• [Washington State Legislature – Senate Bill 5444 Transit Station Knife Ban (2024)](https://lawfilesext.leg.wa.gov/biennium/2023-24/Pdf/Bills/Session Laws/Senate/5444-S.SL.pdf)
• RCW 9A.20.021 Classification of Crimes and Maximum Sentences
• American Knife and Tool Institute – Washington Knife Laws
• Washington Courts Information – Criminal Law Resources