Colorado Knife Laws (Updated 2022)

Among hundreds of Colorado's unsolved mysteries, its knife laws rank as the most puzzling. The laws are tricky, confusing, ever-evolving, and laid down in cryptic messages. We're going to decode these statutes and put them down in plain English - so you know which knives you can legally own and carry.

The Centennial State presents itself in a diverse landscape and there are plenty of reasons one may want to carry a knife. The 26 scenic byways of the state connect the historic monuments with acres of wild, majestic scenery that cover the red rock canyons, towering peaks of the Rocky Mountains, and the sun-kissed prairies. Colorado provides a dream summer destination for survival enthusiasts with unparalleled experience in hiking, camping, and mountain biking. The wilderness and lifestyle demand survival tools and tactical knives are in high demand.

At a glance, it seems like the knife laws in Colorado are quite friendly, but wait till you come to the finer print. It's not all kittens and rainbows as it seems at first.

Legal Knives In Colorado

Legal knives in the Centennial State fall in 2 pigeonholes. There are knives with blades below 3.5 inches in length, and knives with bigger blades measuring over 3.5 inches. These are then further subdivided into automatic knives, folding knives, and fixed blade knives. For the average man, it's important to note the blade length - this is all important when carrying a knife, whether open or concealed.
Knives You Can Legally Own

For knife enthusiasts, Colorado is a haven. The state permits you to own almost any knife you want as long as it stays within your property. Knives that you can legally own here are:

  • Daggers, push knives, dirks, and stilettos are legal.
  • Disguised knives such as pen knives, belt knives, and cane knives, are legal.
  • Bowie and all large fixed blade knives are legal.
  • Automatic knives or switchblades and gravity knives are legal

Balisong knives are in a legal gray area and you should check with your local authorities.

Prohibited Knives:
It is unlawful (class 5 felony) to knowingly possess a “ballistic knife.”


Colorado Open Carry Knife Laws


Colorado has relaxed knife laws when openly carrying non-ballistic knives. As long as your knife is visible on you, and you're not trying to hide it, you can carry any knife that's classified as legal. That means you can openly carry switchblades, folding knives, and all fixed blade knives. It's unlawful to openly carry any kind of ballistic knife.


Colorado Concealed Carry Knife Laws

There are more restrictions around concealed carry. The laws gravitate around the blade length. The law states that one cannot conceal carry any knife with a blade of 3.5 inches or over. The restriction applies to all knives including automatic knives or switchblades, folding blades, and fixed blade knives.

It's important to note that this law applies not only to knives but any sharp item that can cut, stab, or tear wounds. There are exceptions to this law and servicemen like plumbers, carpenters, and electricians can carry sharp tools. Check with your local authorities about carrying long sharp tools, and objects.

 

PEOPLE ARE ASKING

Can I openly carry knives in Colorado?

Yes. Colorado allows open carry of most non-ballistic knives, including switchblades/automatics, folders, and fixed blades, as long as the knife is visible. Ballistic knives are unlawful to carry.

What is Colorado's blade-length rule for concealed carry?

You generally cannot carry a knife concealed if the blade exceeds 3.5 inches. Knives at or under 3.5 inches are typically lawful to carry concealed.

Are there exceptions to the 3.5-inch concealed carry limit?

Yes. Concealed carry of blades over 3.5 inches may be allowed at your own dwelling or property, at your place of business, in a private vehicle for lawful protection, and while hunting or fishing (where otherwise lawful).

Are switchblades (automatic/OTF) legal in Colorado?

Yes. Switchblades and gravity knives are legal to own and carry in Colorado; however, the 3.5-inch limit still applies to concealed carry. Open carry is generally permitted.

Are knives allowed on school property in Colorado?

Colorado law allows possession of non-ballistic knives with blades not exceeding 3.5 inches on school grounds; longer blades or prohibited types may violate the law or local rules.

Do local ordinances (like Denver) change what's legal?

Some municipalities have stricter rules. For example, Denver has historically restricted automatic knives. Always confirm local ordinances in addition to state law.

What knives are outright prohibited in Colorado?

Ballistic knives are unlawful to carry. Otherwise, Colorado is relatively permissive for ownership and open carry of common knife types; concealed carry hinges on the 3.5-inch threshold and specific exceptions.

How do I stay compliant with Colorado knife laws?

Keep concealed blades at 3.5 inches or under, use exceptions narrowly (home, business, private vehicle, hunting/fishing), avoid ballistic knives, and check city/county rules—especially in Denver.