Pocket knives are generally legal to carry in Colorado, but rules hinge on blade length, concealment, and location. Blades under 3.5 inches can be concealed or openly carried statewide, while longer blades require open carry or specific exceptions. Local ordinances add layers, so city-specific checks are essential.
Blade Length Limits
Colorado Revised Statutes § 18-12-105 prohibits concealed carry of knives with blades over 3.5 inches, a Class 1 misdemeanor punishable by up to 364 days in jail and $1,000 fine. Shorter blades face no such restriction, allowing pocket knives like folders in pockets or clips visible. Open carry of any legal blade length is permitted, visible on belts or sheaths.
Prohibited and Legal Types
Ballistic knives—spring- or explosive-propelled—are Class 5 felonies (1-3 years prison, $1,000-$100,000 fine). Switchblades and gravity knives are legal since 2017, with no automatic bans. Common pocket knives (folders, assisted-openers under 3.5 inches) qualify as legal, but “dangerous weapons” context matters in use.
Exceptions to Concealed Carry
Longer blades (>3.5 inches) can be concealed at home, business, in private vehicles for protection, or during hunting/fishing. Sports-use knives also defend against charges. No statewide concealed carry permit covers knives, unlike handguns.
Local Variations
No preemption means cities regulate knives: Denver or Boulder may restrict autos or longer blades; Colorado Springs enforces strictly. Parks, events, or neighborhoods often ban blades regardless of state law. Always verify municipal codes before carrying.
School and Restricted Areas
Any knife on K-12 or college grounds is a Class 6 felony (1-18 months prison, $1,000-$100,000 fine), no blade length exception. Government buildings, airports, and courts prohibit knives too.
Penalties and Enforcement
Misdemeanor concealed violations draw arrests, fines, and possible probation; felonies escalate with priors or use in crimes. Brandishing as a weapon risks assault charges. Police measure exposed blade portions; intent factors in court.
Best Practices
Stick to sub-3.5-inch folders for urban concealed carry; opt for open sheaths for larger blades. Research locals via city websites, avoid sensitive spots, and cooperate if stopped—provide knife details calmly.
SOURCES:
- https://www.shouselaw.com/co/defense/laws/knife-laws/
- https://www.tektoknives.com/blogs/news/colorado-knife-laws-updated
