Arizona Knife Carry Laws: Age Limits, Restricted Places, and Penalties

Arizona knife carry laws let any adult 21 or older carry almost any knife, openly or concealed, without a permit. That includes folding knives, fixed blades, daggers, Bowie knives, and switchblades. The limits that matter are about who you are, where you go, and how you behave once armed.

The rules are the same everywhere in the state. Under ARS 13-3120, no city, county, or town can pass a knife ordinance stricter than state law, and any that tries is void.¹ Phoenix, Flagstaff, Tucson, and rural unincorporated land all follow the same statute.

What Adults 21 and Older Can Carry

Arizona defines a “deadly weapon” as something designed for lethal use. Firearms qualify automatically; knives do not.² A kitchen knife or utility blade is treated as a tool. A dagger or stiletto is far more likely to be treated as a weapon. Either way, if you’re 21 or older, you can carry it in a pocket, in a sheath, in a waistband, or under a jacket without a permit.

One federal footnote applies no matter your age. Ballistic knives, which use a spring to launch a detachable blade, are banned from possession, manufacture, and interstate sale under federal law.³ They’re rare, but they’re the one blade Arizona’s permissive rules can’t save.

If You’re Under 21

Anyone under 21, including adults who are 18, 19, or 20, cannot carry a concealed deadly weapon on their person or within reach in a vehicle. The one carve-out is a pocket knife.⁴

Arizona’s statutes never define “pocket knife” with a blade length or design test.² Some agencies treat it as a folder with a blade under four inches, but that number isn’t in the law. If you’re under 21 and relying on this exception, a small folding knife is the safe choice. A large fixed blade almost certainly isn’t a pocket knife.

Open carry is different. The concealed-carry restriction doesn’t touch it. A 19-year-old can wear a visible fixed-blade knife in a belt sheath without violating this provision.

Concealed carry under 21 is a class 3 misdemeanor. The maximum is 30 days in jail⁵ and a $500 fine.⁶

Where You Can’t Carry

ARS 13-3102 lists locations that are off-limits for any deadly weapon, regardless of your age:⁴

K-12 school grounds. A class 1 misdemeanor, or a class 6 felony if drug activity is involved.
Polling places on election day. A class 1 misdemeanor.
Nuclear and hydroelectric generating stations. A class 4 felony, with a presumptive prison term of 2.5 years.
Government buildings or public events after being asked to disarm and refusing. A class 1 misdemeanor.

Federal buildings add their own restrictions. Carrying a dangerous weapon into a federal building can bring up to a year in prison, and up to two years for a federal courthouse. Federal law does exempt pocket knives with blades under 2½ inches.⁷ Airport screening checkpoints are a separate federal matter governed by TSA rules.

Private property is the last piece. Arizona’s alcohol-premises weapons law targets firearms, not knives,⁸ but any business can ask you to leave. Refuse, and you’re facing a trespassing charge.

If a Government Building Asks You to Disarm

The operator of a government-owned building or public event can’t just tell you to figure it out. ARS 13-3102.01 requires them to provide temporary secure storage that’s available when you arrive and lets you retrieve your weapon on the way out.⁹ The requirement doesn’t apply to venues with a liquor license.

Prohibited Possessors

Some people are barred from possessing any deadly weapon, not just firearms.⁴ You’re a prohibited possessor if you:

Have a felony conviction, in any state, and haven’t had your civil rights restored
Are currently serving a sentence of imprisonment, probation, parole, or community supervision for a felony or domestic violence conviction
Have been found by a court to be a danger to yourself or others due to a mental health condition
Have been found incompetent or guilty except insane²

A prohibited possessor caught with a deadly weapon faces a class 4 felony, with a presumptive prison term of 2.5 years.¹⁰

The type of knife matters here. A basic pocket knife or kitchen knife likely doesn’t meet the “designed for lethal use” threshold. A dagger, stiletto, or large combat knife almost certainly does. After finishing a sentence, you can apply to the superior court to have your civil rights restored, and the application has no filing fee.¹¹

Talking to Police While Carrying

You don’t have to volunteer that you’re armed. But if an officer asks during a lawful stop whether you’re carrying a concealed deadly weapon, you have to answer truthfully. Lying or refusing is a class 1 misdemeanor.⁴

The duty applies to legitimate contact: a traffic stop, an arrest, an investigatory detention based on reasonable suspicion. A casual chat at a gas station doesn’t trigger it.

When Legal Carry Turns Into a Crime

Even when your knife is legal and you are, your behavior can flip the situation into a felony.

Reckless Display

Recklessly handling or displaying a deadly weapon with intent to disturb the peace is a class 6 felony under Arizona’s disorderly conduct statute.¹² Waving a knife during an argument or pulling one to intimidate someone can bring six months to 1.5 years in prison, with no physical contact required.

Carrying During Another Crime

Carrying a concealed deadly weapon while committing or furthering any felony is a separate class 6 felony stacked on top of the underlying charge.⁴ If the underlying felony is drug-related, the weapons charge jumps to a class 4 felony.

Sentencing Ranges

Arizona uses structured sentencing. For first-time offenders:¹⁰

Class 6 felony: 6 months minimum, 1 year presumptive, 1.5 years maximum. Aggravating factors can push it to 2 years.
Class 4 felony: 1.5 years minimum, 2.5 years presumptive, 3 years maximum. Aggravating factors can push it to 3.75 years.

Prior felonies raise these ranges into enhanced tiers with longer mandatory minimums. A second or third offense is not sentenced from the same table.

1
Arizona Legislature. Arizona Code 13-3120 – Knives Regulated by State; State Preemption; Definitions
2
Arizona Legislature. Arizona Code 13-3101 – Definitions
3
Office of the Law Revision Counsel. 15 U.S. Code 1245 – Ballistic Knives
4
Arizona Legislature. Arizona Code 13-3102 – Misconduct Involving Weapons; Defenses; Classification; Definitions
5
Arizona Legislature. Arizona Code 13-707 – Misdemeanors; Sentencing
6
Arizona Legislature. Arizona Code 13-802 – Fines for Misdemeanors
7
Office of the Law Revision Counsel. 18 U.S. Code 930 – Possession of Firearms and Dangerous Weapons in Federal Facilities
8
Arizona Legislature. Arizona Code 4-229 – Licenses; Handguns; Posting of Notice
9
Arizona Legislature. Arizona Code 13-3102.01 – Storage of Deadly Weapons; Definitions
10
Arizona Legislature. Arizona Code 13-702 – First Time Felony Offenders; Sentencing; Definition
11
Arizona Legislature. Arizona Code 13-908 – Restoration of Civil Rights; Application; Firearm Rights; Definition
12
Arizona Legislature. Arizona Code 13-2904 – Disorderly Conduct; Classification