St. Louis County, MO Fire Regulations: Fireworks (2026)

St. Louis County's fireworks ordinance is codified at Title VIII, Chapter 810 SLCRO 1974. The ordinance prohibits the sale, gift, use, discharge, or explosion of fireworks anywhere within St. Louis County, including unincorporated areas, except under a permit issued by the St. Louis County Department of Public Works. The ban covers all consumer fireworks defined under Missouri RSMo 320.106 (firecrackers, bottle rockets, Roman candles, aerial shells, mortars, fountains, and similar devices). The only authorized fireworks activity is a permitted public display by a licensed pyrotechnic operator. Permits must be obtained at least 10 business days in advance of the proposed display and require approval from the fire protection district where the display will occur. The application is processed through the St. Louis County Department of Public Works (Pyrotechnic Display Permit). Penalties for violation are a fine of $50 to $1,000 and/or imprisonment up to 90 days per offense. State law context: Missouri RSMo Chapter 320 governs fireworks at the state level. RSMo 320.106 defines consumer fireworks. RSMo 320.116 governs licensure for fireworks businesses. RSMo 320.121 expressly authorizes cities and certain counties to regulate or prohibit fireworks. RSMo 320.122 contains a specific supremacy clause for St. Louis County, recognizing that the county may regulate fireworks more restrictively than state law and specifying how local rules apply within incorporated and unincorporated areas. RSMo 320.131 governs fireworks distribution. The State of Missouri, the Missouri State Fire Marshal, and the local fire protection districts share enforcement responsibility with St. Louis County police. Many incorporated cities within St. Louis County (Florissant, Kirkwood, Ferguson, Chesterfield, Maryland Heights, Webster Groves, etc.) have echoing or stricter municipal bans, often imposing their own fines.