Illinois Service Dog Registration

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Illinois Service Dog Laws at a Glance

Written by: Licensed Professional Counselor (LPC-MHSP)
Medically Reviewed by Evelyn Daley MSW, LCSW
Published: Last updated:

The ADA protects service dog handlers in every state. Illinois adds its own rules in 775 ILCS 30/3 — here is what that means for you, with a link to each official source.

Public access law775 ILCS 30/3
Service dogs in trainingCovered — 775 ILCS 30/3
Fake service dog penaltyNo general state offense
Harming a service dogInjuring a service animal: Class 4 felony (Class 3 if killed/disabled); harassing/interfering with a guide/support dog: Class A misd.510 ILCS 70/4.04; 510 ILCS 70/7.15
Dog license feeNo statewide exemptionNormal local dog-license rules apply; some cities and counties waive the fee on request.
Where to file a complaintIllinois Department of Human RightsFile within 2 years of the incident.

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Illinois Service Dog FAQ

Do I have to register my service dog in Illinois?

No. Neither the ADA nor 775 ILCS 30/3 requires registration, and businesses may not demand it.

What can a business in Illinois ask about my service dog?

Only two questions: is the dog required because of a disability, and what task is it trained to perform. No documents, demonstrations or pet fees.

Can I take a service dog in training into public places in Illinois?

Yes. The ADA doesn't cover dogs in training, but Illinois does under 775 ILCS 30/3.

What happens if someone harms or interferes with my service dog in Illinois?

Illinois treats it as a specific offense under 510 ILCS 70/4.04; 510 ILCS 70/7.15: Injuring a service animal: Class 4 felony (Class 3 if killed/disabled); harassing/interfering with a guide/support dog: Class A misd. Report it to local police, and keep vet bills and witness details.

How do I file a complaint if I'm refused access in Illinois?

File with the Illinois Department of Human Rights within 2 years of the incident, or with the U.S. Department of Justice at ADA.gov.

Can I fly with my service dog from Chicago O'Hare (ORD)?

Yes. Airlines at Chicago O'Hare (ORD) must accept trained service dogs in the cabin free of charge; most ask for the DOT Service Animal Air Transportation Form in advance.

Are service dogs allowed in rental housing in Illinois?

Generally yes. Trained service dogs are a reasonable accommodation under the federal Fair Housing Act and 310 ILCS 120, so landlords should waive no-pet rules and pet fees, with narrow exceptions such as some small owner-occupied buildings.

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Official Sources

  1. 775 ILCS 30/3 — service animal public access
  2. 510 ILCS 70/4.04; 510 ILCS 70/7.15 — harming or interfering with a service dog
  3. 310 ILCS 120 — housing
  4. Illinois Department of Human Rights — complaints
  5. ADA Requirements: Service Animals (U.S. Department of Justice) — federal rules
  6. Service Animals (U.S. Department of Transportation) — air travel

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This summary of Illinois law was last reviewed in October 2026 and is general information, not legal advice. United States Service Dogs is a private registration service, not a government agency.