Yes, Wisconsin generally permits backyard chickens, but local ordinances and state health codes impose strict limits. Municipal codes vary, with Madison and Milwaukee allowing small flocks under 20 hens, while rural townships often impose no restrictions. The Wisconsin Department of Agriculture, Trade and Consumer Protection (DATCP) regulates poultry health, mandating biosecurity measures to prevent avian influenza outbreaks projected to escalate in 2026.
Key Regulations for Keeping Backyard Chickens in Wisconsin
- Flock Size Limits: Most urban areas cap hens at 20 birds; Dane County’s 2024 ordinance restricts roosters entirely to mitigate noise complaints. Rural counties frequently defer to state guidelines, which set no hard cap but encourage flock sizes under 50 for manageable biosecurity.
- Zoning Compliance: Municipalities like Green Bay require permits for coops exceeding 100 square feet or located within 50 feet of neighboring residences. Violations trigger fines up to $500 under local nuisance ordinances, enforced by city zoning boards.
- Health and Biosecurity: DATCP’s 2026 draft rules mandate coop disinfection protocols and mandatory reporting of sick poultry to the Wisconsin Poultry Disease Lab. Failure to comply risks quarantine orders, as seen in 2023’s HPAI outbreaks affecting 47 commercial flocks statewide.