Firework laws in Colorado allow only a narrow set of ground-based, non-explosive devices for personal use. Anything that flies into the air or explodes is illegal without a professional display permit, and many cities add further restrictions on top of the state rules. The dry climate and wildfire history drive some of the tightest fireworks restrictions in the West.
What’s Legal to Buy and Use
Colorado calls the legal category “permissible fireworks.” Every item on the list stays on the ground. The state caps the amount of pyrotechnic composition each device may contain, and all permissible fireworks must comply with federal Consumer Product Safety Commission standards and qualify as consumer fireworks under federal transportation rules.1Justia Law. Colorado Revised Statutes Section 24-33.5-2001 – Definitions
- Cylindrical fountains, up to 75 grams for a single tube or 200 grams when multiple tubes share a base
- Cone fountains, up to 50 grams per cone or 200 grams for multiple cones on a shared base
- Wheels, up to 60 grams per driver unit or 200 grams per complete wheel
- Ground spinners, no more than 20 grams, designed to spin on the ground rather than launch
- Illuminating torches and colored fire, up to 200 grams each
- Sparklers and dipped sticks, up to 100 grams total, with chlorate or perchlorate composition capped at 5 grams
- Snakes, trick noise makers, and similar novelties, no more than 50 milligrams of explosive composition
A few items fall outside the fireworks definition entirely and aren’t regulated as fireworks at all: toy caps and party poppers with very small amounts of pyrotechnic material, highway flares and marine distress signals, and small model rocket engines.1Justia Law. Colorado Revised Statutes Section 24-33.5-2001 – Definitions
What’s Illegal for Personal Use
Anything that explodes or leaves the ground is illegal for consumers in Colorado. That covers firecrackers, bottle rockets, Roman candles, aerial shells, mortars, and missiles.2Front Range Fire Rescue. Fireworks Information If you’ve seen it launched into the sky at a neighborhood party, it was almost certainly illegal. The only lawful path to using these devices is through a professional display permit issued by a local governing body to an organization, fair association, amusement park, or similar group.3COCODE. Colorado Revised Statutes 24-33.5-2003 – Permits – Exceptions to Permit Requirements
Age Restrictions
No one under 16 may purchase any fireworks in Colorado, including sparklers and fountains. Minors under 16 can possess and use permissible fireworks only under direct adult supervision, meaning a responsible adult must be physically present and close enough to intervene.4Legal Information Institute. 8 CCR 1507-12-2.3 – Purchase, Possession or Discharge
Local Bans and Fire Restrictions Can Override the State Rules
Legal statewide doesn’t mean legal where you live. Colorado lets cities and counties tighten the rules, and many do.
Aurora maintains a Stage 1 burn restriction throughout the entire year, which restricts the use of all fireworks, and gives its fire chief the authority to impose a total ban when conditions warrant.5City of Aurora. City of Aurora Fireworks Other communities allow permissible fireworks only in a narrow window. Westminster permits them from midnight on July 3rd through noon on July 5th. Commerce City generally bans all fireworks but allows some personal fireworks on July 3rd, July 4th, and New Year’s Eve. These windows can shift year to year with drought conditions, so a quick call to your local fire department before buying anything is the safest move.
Colorado’s governor can also issue a proclamation closing state lands to open burning, which includes all fireworks, when extreme fire hazard conditions develop. The governor decides when the emergency ends.6Justia Law. Colorado Revised Statutes Section 24-33.5-1225 Statewide executive orders banning open burning and fireworks were issued in 2002 and 2012 during severe wildfire seasons. These bans don’t override local ordinances that are already more restrictive.7City of Fountain. Firework Information – Section: Executive Orders
Federal land is off-limits year-round. Fireworks are prohibited on Bureau of Land Management public lands in Colorado regardless of local rules. Violators face civil liability and criminal prosecution, and the person responsible pays the full cost of fire suppression and property damage if a fire starts.8Bureau of Land Management. Fire Prevention Order COF02-26-01 Stage 1 Fire Restrictions
Penalties if You’re Caught
Under state law, possessing or using prohibited fireworks is a petty offense. Penalties include a fine of up to $300 and up to 10 days in jail. That’s the floor, not the ceiling. Repeat violations, large quantities, or incidents that cause property damage or injury raise the stakes considerably.
Local penalties are often harsher than the state baseline. Greeley raised its fine for illegal fireworks possession or use to $1,000, with the possibility of jail time on top.9Greeley Tribune. Illegal Fireworks Use, Possession in Greeley Now Comes With $1K Fine, Possible Jail Time The local fine is usually the one you’ll actually face.
Driving Fireworks Back From Wyoming Is a Federal Crime
Colorado residents sometimes head to Wyoming or New Mexico for fireworks that are legal there but banned here. Bringing them home across state lines violates 18 U.S.C. ยง 836, which makes it a federal offense to transport fireworks into any state where those fireworks are prohibited. A conviction carries a fine and up to one year in federal prison.10Office of the Law Revision Counsel. 18 U.S. Code 836 – Transportation of Fireworks Into State Prohibiting Sale or Use
The statute reaches anyone who transports, delivers for transportation, or attempts to transport fireworks knowing they’ll be used in violation of the destination state’s laws. There are narrow exceptions for common carriers passing through in continuous interstate transit and for fireworks moved for federal agency use, but neither helps a driver loading a trunk with bottle rockets in Cheyenne.10Office of the Law Revision Counsel. 18 U.S. Code 836 – Transportation of Fireworks Into State Prohibiting Sale or Use On top of the federal offense, Colorado separately prohibits importing fireworks without a state license.
Civil Liability and Insurance Fallout
The criminal fine is often the smallest consequence. If your fireworks start a fire, injure someone, or damage a neighbor’s property, you’re on the hook for the full cost. On federal lands in Colorado, that includes fire suppression costs, which can reach the hundreds of thousands.8Bureau of Land Management. Fire Prevention Order COF02-26-01 Stage 1 Fire Restrictions
Homeowner’s insurance usually makes this worse. Most policies exclude coverage for damage arising from illegal activity. If the fireworks that burned down your neighbor’s fence were prohibited under Colorado law, the insurer will likely deny the claim and you’ll pay out of pocket. Read your policy’s exclusions, but the general pattern is that illegal fireworks use leaves you financially alone.
Hosting adds another layer. A property owner who allows fireworks use, fails to supervise children, or doesn’t step in when things get dangerous can be held liable for resulting injuries. Even if a guest brought the fireworks, a host who knew and let it continue shares responsibility. Using illegal fireworks raises the standard of negligence and makes it easier for an injured person to win a lawsuit.
Disposing of Used Fireworks
Spent fireworks are still a fire hazard. A fountain that looks done can reignite hours later in a trash can. Soak used fireworks completely in water for at least 15 minutes, longer if you can, then double-bag them before placing them in household trash. The same goes for duds that failed to ignite, since they can still go off unexpectedly. Some Colorado municipalities set up designated collection points for fireworks debris around the Fourth of July, so check whether your city offers one before tossing everything in the bin.