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St. Clair County, IL Animal Ordinances: Breed Restrictions (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Breed ban
None in county
Standard
Behavior, not breed
County dangerous-dog test
Attack without provocation
State definition
510 ILCS 5/2.05a
Municipal breed bans
Limited by Illinois law

Summary

St. Clair County does not ban any dog breed. Regulation is behavior-based: a dog is a 'dangerous dog' by its conduct, not its breed. Illinois law (510 ILCS 5/2.05a) likewise defines dangerous dogs by behavior, not breed.

These county ordinances apply to unincorporated areas of St. Clair County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

'Dangerous Dog' means a dog which has been known at any time, without provocation, to attack or injure any person who was peacefully conducting himself where he lawfully may be.

View official code

Full Breakdown

The St. Clair County Animal Services Code defines a 'Dangerous Dog' (3-1-2) as one 'which has been known at any time, without provocation, to attack or injure any person who was peacefully conducting himself where he lawfully may be' - a conduct test with no breed listed. The Illinois Animal Control Act reinforces this: 510 ILCS 5/2.05a defines a dangerous dog by a reasonable-person threat standard. Illinois in fact preempts breed-specific bans by home-rule units. If you own a pit bull, Rottweiler or similar breed, no county law targets you for the breed alone - only conduct matters. Check your city ordinance, though municipal breed bans in Illinois are limited by state law.

Violations & Fines

There is no fine for owning any particular breed. A dog adjudged dangerous or vicious is subject to leash/muzzle control orders, injunction (3-4-10) and, for vicious dogs, possible humane dispatch under 510 ILCS 5/15.

Frequently Asked Questions

Is my pit bull legal in St. Clair County?
Yes. Neither the county Animal Services Code nor Illinois law bans any breed. Dogs are regulated by conduct under the dangerous-dog standard, not by breed.
How does a dog become 'dangerous' here?
Under county code 3-1-2, a dangerous dog is one that has, without provocation, attacked or injured a person lawfully and peacefully present - a behavior-based determination.

Sources & Official References

Other rules in St. Clair County

Dog Leash LawsSome RestrictionsChickens & LivestockSome RestrictionsFence Regulations: Height LimitsSome RestrictionsPet LimitsSome RestrictionsCat RulesSome RestrictionsMandatory Spay/NeuterSignificant RestrictionsExotic PetsSome RestrictionsWildlife FeedingSome RestrictionsNoise Ordinances: Aircraft NoiseSome RestrictionsParking Rules: Driveway RulesSome RestrictionsFence Regulations: Material RestrictionsSignificant RestrictionsFence Regulations: Retaining WallsSome RestrictionsFence Regulations: Fence Permit RequirementsSome Restrictions

All St. Clair County rules

How St. Clair County compares: Cities with No Dog Breed Restrictions·Compare St. Clair County to another location·View the Illinois animal ordinances overview

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