Noise Ordinances in Cook County, IL (2026)

7 county-level rules, plus city-specific rules for 10 cities in Cook County, Illinois.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Cook County. If you live within an incorporated city, that city's own rules apply: see the city list below.

Quiet Hours

Cook County bans noise-making on public ways outside 8:00 a.m. to 6:00 p.m., including paid musical performances, under a Sheriff-enforced ordinance covering unincorporated areas and county police-service zones.

Cook County Public Way Noise Curfew

Significant Restrictions

Cook County Code § 58-178

No person shall make... upon a public way... any noise of any kind by crying, calling or shouting, or by means of any whistle, rattle, bell, gong,... horn, hand organ,... radio, phonograph, sound amplifying or other similar electronic device; provided that the restrictions shall not apply to any licensed peddler... between the hours of 8:00 a.m. and 6:00 p.m. No person shall use or perform any ...

Full ordinance details →Official source ↗

Construction Hours

Unincorporated Cook County's Building Code confines construction work to the hours between 7:00 a.m. and 8:00 p.m., per Cook County Code § 102-104(5), carving out only emergency repairs to public utilities and the continuous pumps needed to dewater a job site, with any off-hours work allowed solely by a Commissioner-approved variance.

Cook County Construction Hours Run 7 AM-8 PM

Some Restrictions

Cook County Code § 102-104(5)

Hours of construction shall between the hours of 7:00 a.m. and 8:00 p.m., except for emergency work on public improvements or public utilities, and the operation of pumps when continuous pumping is necessary for removal of water from the construction area. A variance may be requested from the Department of Building and Zoning when it can be shown to the satisfaction of the Commissioner that con...

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Barking Dogs

Cook County bars owners from letting a tethered dog bark, whine, howl, or make excess noise that becomes a nuisance, under the county's animal care chapter enforced by the Department of Animal and Rabies Control.

Cook County Tethered Dog Barking Nuisance Ban

Some Restrictions

Cook County Code § 10-8(e)(7)

(e)Restrictions on a dog that is tethered:(1)A tethered dog must have access at all times to water, adequate shelter, and dry ground....(7)No person shall permit at any time a tethered dog to bark, whine, howl or make excess noises so as to cause a nuisance.

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Leaf Blower Rules

Cook County caps the noise output of new powered lawn and garden equipment, including leaf blowers, sold or leased in the county at 65 decibels measured 50 feet away, under Code Sec. 30-452.

Cook County Leaf Blower Noise Limits

Some Restrictions

Cook County Code Sec. 30-452

No person shall sell or lease, or offer for sale or lease, any powered equipment or powered hand tool that produces a maximum noise level exceeding the following noise limits at a distance of 50 feet: ... (4) Powered equipment intended for repetitive use in residential areas. Such equipment includes lawn mowers, small lawn and garden tools, riding tractors, snow removal equipment, general low h...

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Amplified Music & Outdoor Sound

Cook County Code § 58-178 bans making loud noise, by voice, instrument, radio, phonograph, or sound-amplifying device, on or near a public way, with a narrow exception for licensed peddlers advertising between 8:00 a.m. and 6:00 p.m.

Cook County Bans Amplified Public-Way Noise

Some Restrictions

Cook County Code § 58-178

No person shall make, or cause, permit or allow to be made upon a public way, or in such close proximity to a public way as to be distinctly and loudly audible upon such public way, any noise of any kind by crying, calling or shouting, or by means of any whistle, rattle, bell, gong, clapper, hammer, drum, horn, hand organ, mechanically operated piano, other musical instrument, wind instrument, ...

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Decibel Limits

In unincorporated Cook County's I-1 through I-4 industrial zoning districts, plants can't exceed set octave-band decibel limits at residential district boundaries or adjacent lot lines, with stricter nighttime caps enforced through the zoning performance-standards process.

Cook County Industrial Noise Limits By District

Some Restrictions

Cook County Zoning Ordinance § 6.1.9(E)(4)(a)

4.Industrial performance standards. Uses shall comply with the following standards:a.Noise. ... shall be used with the following tables: At no point along the boundary of a residential district or along an adjacent lot shall the sound pressure level of any operation or plant exceed the decibel limits in the octave bands designated below.

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Vehicle Noise

Cook County requires every motor vehicle to run a working muffler and bans cutouts, by-passes, and straight pipes on public ways under County jurisdiction, with a $25 fine per violation.

Cook County Muffler And Exhaust Noise Rules

Some Restrictions

Cook County Code § 82-123

(a)(1)Every motor vehicle shall at all times be equipped with a muffler in good working order and in constant operation to prevent excessive or unusual noise and annoying smoke.(2)No person shall use a muffler cutout, by-pass, straight pipe or similar device upon a motor vehicle on a public way.

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