Animal Ordinances in McHenry County, IL (2026)
10 rules for unincorporated McHenry County, Illinois.
Verified from official government sources
Chickens & Livestock
Unincorporated McHenry County lets residents keep chickens, fowl and other farm animals in Estate Areas, but only if the keeper meets zoning rules, provides adequate shelter and husbandry, and fences the animals in. County Animal Control, under the Public Health Ordinance, enforces the standard.
Backyard Chickens & Farm Animals in McHenry County
Some RestrictionsMcHenry County Public Health Ordinance § 8.04.910
Farm Animals in Estate Areas: No person shall keep, or cause to be kept, farm animals or fowl other than household pets including animals or fowl ordinarily permitted in the house unless such person has met the following requirements: A. Has met all applicable requirements of the McHenry County or Local Zoning Ordinance rules and regulations, and B. Has provided adequate shelter and area adequa...
Dog Leash Laws
McHenry County's Public Health Ordinance requires every dog to be restrained or controlled so it cannot run at large. Off the owner's property a dog must be on a leash held by a competent person. Loose animals are declared a public nuisance and impounded.
Dog Leash & Restraint Rules in McHenry County
Some RestrictionsMcHenry County Public Health Ordinance § 8.04.820
All dogs, cats and other animals kept in any area in McHenry County shall be restrained and/or controlled, as defined by this Ordinance, in such a manner as to prevent such dog, cat or other animal from running at large.
Breed Restrictions
Neither McHenry County nor Illinois bans dogs by breed. Under 510 ILCS 5/15, a dog is regulated by its individual conduct: vicious dogs must be confined to an enclosure and, when out, muzzled and restrained by a 300-pound chain. The statute forbids breed-specific classification.
Dog Breed Restrictions & Dangerous Dogs
Some Restrictions510 ILCS 5/15
It is unlawful for any person to keep or maintain any dog which has been found to be a vicious dog unless such dog is at all times kept in an enclosure. ... Vicious dogs shall not be classified in a manner that is specific as to breed.
Beekeeping
Keeping bees on residential and agricultural parcels in unincorporated McHenry County requires state registration and a flyway barrier once a hive sits within 25 feet of a property line. County code (UDO §16.56.050(C)) sets hive-type standards, a year-round water source, and a re-queening rule for aggressive colonies, all enforced under the county's zoning accessory-use standards.
Beekeeping Rules in Unincorporated McHenry County
Some RestrictionsMcHenry County UDO § 16.56.050(C)
C. Apiaries (Non-Agriculture Exempt). 1. In compliance with the Illinois Bees and Apiaries Act (510 ILCS 201/), every person keeping bees shall register with the Illinois Department of Agriculture. 2. All bee colonies shall be kept in a removable frame hive, which shall be kept in sound and usable condition. 3. Where any colony is situated within twenty-five (25) feet ...
Exotic Pets
Illinois' Dangerous Animals Act (720 ILCS 585) bars private residents in McHenry County from keeping big cats, bears, wolves, coyotes and life-threatening reptiles such as crocodilians and large constricting snakes. Only zoos, licensed exhibitors and similar facilities may keep them in escape-proof enclosures.
Exotic & Dangerous Pet Ban in Illinois
Some Restrictions720 ILCS 585/1
No person shall have a right of property in, keep, harbor, care for, act as custodian of or maintain in his possession any dangerous animal except at a properly maintained zoological park, federally licensed exhibit, circus, scientific or educational institution, research laboratory, veterinary hospital or animal refuge in an escape-proof enclosure.
Pet Limits
Animal hoarding in McHenry County is prosecuted under the Illinois Humane Care for Animals Act (510 ILCS 70). A "companion animal hoarder" keeps a large number of animals in severe overcrowding without providing adequate food, water, shelter and veterinary care. Convictions can require psychological counseling.
Animal Hoarding Laws in McHenry County
Some Restrictions510 ILCS 70/2.10
"Companion animal hoarder" means a person who (i) possesses a large number of companion animals; (ii) fails to or is unable to provide what he or she is required to provide under Section 3 of this Act; (iii) keeps the companion animals in a severely overcrowded environment.
Cat Rules
In McHenry County cats are covered by the same animal-control ordinance as dogs: they must be restrained so they do not run at large, and every cat four months or older must be vaccinated against rabies by a licensed veterinarian and registered with the county.
Cat Rules & Rabies Vaccination in McHenry County
Some RestrictionsMcHenry County Public Health Ordinance § 8.04.890
Every owner of a dog or cat four (4) months or more of age, within the County of McHenry, Illinois, shall cause such dog or cat to be vaccinated by a licensed veterinarian with a prophylactic rabies vaccine approved by the United States Department of Agriculture and the Illinois Department of Agriculture.
Mandatory Spay/Neuter
McHenry County orders spay or neuter surgery in two situations: a dog, cat or other animal caught running at large a second time must be fixed and microchipped within 30 days of being reclaimed, and no unredeemed shelter animal goes up for adoption unless it's already altered or the adopter signs a 30-day promise to get it done.
McHenry County Mandatory Spay/Neuter Rules
Some RestrictionsMcHenry County Public Health Ordinance § 8.04.870(A)(2), (D)(3)
A dog, cat, or other animal found running at large contrary to the provisions of this Ordinance a second or subsequent time must be spayed or neutered and microchipped within thirty (30) days after being reclaimed, unless already spayed or neutered and microchipped; and failure to comply shall result in impoundment of the dog, cat or other animal. ... An unredeemed dog or cat shall not be relea...
Microchipping
McHenry County Animal Control scans every impounded dog, cat and other animal for a microchip at intake, and no companion cat or dog leaves the pound through redemption without being microchipped first if it wasn't already done. The county's Public Health Ordinance folds the microchipping fee into the standard redemption checklist owners must complete to get an impounded pet back.
McHenry County Pet Microchipping Requirements
Some RestrictionsMcHenry County Public Health Ordinance § 8.04.870(C)(1)(a), (C)(1)(b)(6)
When dogs, cats or other animals are apprehended and impounded by the Administrator, or his or her authorized agent, they must be scanned for the presence of a microchip. ... In case the owner of any impounded dog, cat, or other animal desires to make redemption thereof, they may do so by complying with the following: ... (6) Paying for microchipping and registration if not already done. All co...
Veterinary Clinic Zoning
Unincorporated McHenry County splits veterinary uses into two zoning categories. A clinic treating small and large animals needs a conditional use permit in the Agricultural (A-1) District, while a small-animal-only clinic is not allowed there at all under Table 16.32-1 of the Unified Development Ordinance.
Veterinary Clinic Zoning in McHenry County
Significant RestrictionsMcHenry County UDO § 16.08.020 (Definitions - VETERINARY CLINIC); Table 16.32-1 / § 16.32.060
VETERINARY CLINIC. A FACILITY where medical care is given to animals and where animals may be boarded overnight, if required for medical purposes. A small animal veterinarian provides medical care to domesticated companion animals, such as dogs, cats, birds, rabbits, and reptiles. A large animal veterinarian provides medical care to farm and ranch animals and other large non-domesticated animals.
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