Yes.
Denver and the city of Colorado Springs ban the use and possession of all fireworks, even sparklers, joining several cities across the state. Total bans were passed to reduce the risk of fires, including wildfires, which have become an annual state summer danger.
Edgewater, Lakewood, Lafayette, Fort Collins, Glenwood Springs, Silt and Rifle also ban all fireworks for at least part of the year. Garfield County voted to ban them in its unincorporated areas in March. Most other communities limit fireworks use to firecrackers that do not fly or fireworks that don’t explode like sparklers or fountains.
Punishments for violating the local prohibitions vary. Colorado Springs can punish violators with a fine of up to $2,500 or 189 days in jail. Denver can levy fines up to $999 and up to a year in jail. Lakewood can issue fines up to $2,650.
This fact brief is responsive to conversations such as this one.
See full source list below.