Yes, keeping backyard chickens is generally legal in Missouri, but compliance with local ordinances and state health codes is mandatory. Missouri Revised Statutes § 262.620 permits poultry ownership, yet counties and municipalities impose additional restrictions, particularly in urban areas.
Key Regulations for Keeping Backyard Chickens in Missouri
- Zoning and Permit Requirements: Municipalities like St. Louis and Kansas City require permits for backyard flocks exceeding 6 hens, with some areas (e.g., Clayton) banning roosters entirely. The 2026 St. Louis County Health Department draft ordinance proposes mandatory coop inspections for flocks over 12 birds.
- Coop and Sanitation Standards: State regulations under the Missouri Department of Agriculture mandate coops be at least 20 feet from neighboring residences, with waste management plans to prevent nuisance complaints. Violations trigger fines under § 262.635.
- Disease Control Protocols: Flocks must register with the Missouri Avian Influenza Surveillance Program, per 2 CSR 30-15.010, to enable rapid response to outbreaks like the 2024 HPAI detections in southwest Missouri.
Local variances are significant; for example, Springfield permits up to 20 hens without permits, while Jefferson City limits flocks to 6 hens in residential zones. Consult the Missouri Municipal League’s 2025 zoning database for county-specific updates. Non-compliance risks confiscation under § 262.640 or misdemeanor charges.