4 county-level rules, plus city-specific rules for 1 city in Cook County, Illinois.
Verified from official government sources
Illinois statewide preemption under the Firearm Concealed Carry Act bars most municipal gun ordinances, but Cook County's grandfathered assault weapons ban (Ord. 06-O-50) survives in unincorporated areas and several suburbs.
Illinois residents must hold both a Firearm Owner's Identification (FOID) card and a Concealed Carry License (CCL) issued by the Illinois State Police. Cook County Sheriff handles fingerprinting and certain endorsement checks but does not issue the license.
Illinois prohibits open carry of firearms statewide under 720 ILCS 5/24-1 and the Firearm Concealed Carry Act, which authorized only concealed carry. Cook County follows state law; there is no local open-carry exception in unincorporated areas or suburbs.
Without a Concealed Carry License, Illinois drivers must transport firearms unloaded and enclosed in a case, gun box, or trunk under 720 ILCS 5/24-1.6. CCL holders may carry loaded and concealed in a vehicle but cannot openly display.
1 cities in Cook County have their own firearms rules. Each link goes to that city's dedicated page with code citations.
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