Casper, WY Animal Ordinances: Chickens & Livestock (2026)

Casper Municipal Code Chapter 6.04 lets an occupied single-family home keep chicken hens as an accessory use under Section 6.04.270, capping the flock at six hens and banning roosters outright, except that the AG (urban agriculture) zoning district may keep them. Only true chicken hens qualify; hybrids need a rezoning or a conditional use permit from the planning and zoning commission. Every flock needs a fully enclosed, predator-resistant coop with at least five square feet of floor area per hen, and hens must be locked inside from dusk to dawn.

If hens range outside the coop by day, the run needs a six-foot privacy fence and, if needed, clipped wing feathers. Coops and pens sit only in the rear yard, set back six feet from side and rear lines (three feet from an alley), and the coop itself cannot exceed sixty square feet of footprint or seven feet of height. Butchering chickens within city limits is flatly prohibited under 6.04.270.7, and feed must be stored in an airtight metal container to keep out rodents. A hen that gets loose is treated as at large under 6.04.010 and can be impounded by Metro Animal Services, then adopted, rehomed or euthanized if unclaimed within five working days.

Homeowners' association covenants can impose stricter limits or ban hens outright, and the city ordinance does not preempt them. Separately, Section 6.04.280 confines livestock, meaning any equine, bovine, ovine, swine, caprine or hybrid ungulate, to properly zoned areas within the Animal Control District, allowing only short-term loading pens for shipping, capped at twelve hours.