Noise Ordinances in DuPage County, IL (2026)
5 county-level rules, plus city-specific rules for 1 city in DuPage County, Illinois.
Verified from official government sources
Quiet Hours
In unincorporated DuPage County, running a sound amplifying device or instrument loud enough to be heard past 100 feet between 10:00 p.m. and 7:00 a.m. is a public nuisance unless the operator has first obtained a county permit.
DuPage County Nighttime Noise Curfew
Some RestrictionsDuPage County Code § 26-12
It shall be unlawful and a public nuisance to use or operate a sound amplifying device or instrument so that the device or instrument produces loud and raucous sounds at a distance greater than one hundred (100) feet from said device or instrument unless one (1) has obtained a permit to do so from the County of DuPage, between the hours of 10:00 p.m. and 7:00 a.m.
Construction Hours
Unincorporated DuPage County bars noisy construction before 7 a.m. or after 9 p.m., and bans it outright on Sundays if it produces loud or annoying noise.
DuPage County Construction Hours Limit
Some RestrictionsDuPage County Code Sec. 8-130(A)
Night Operations: No construction or alteration operations shall be carried on prior to 7:00 a.m. or after 9:00 p.m., if such produces loud or annoying noises. Construction and/or alteration operations shall not be permitted on Sundays if such produces loud or annoying noises. B. Sidewalks: No sidewalk shall be obstructed in course of building operations and whenever a removal of a sidewalk i...
Barking Dogs
DuPage County Animal Services bans letting any animal run uncontrolled or harass people and vehicles by chasing, barking or biting so as to threaten public safety. The rule covers unincorporated DuPage County only; Naperville, Wheaton and other cities enforce their own municipal codes. A conviction carries a real fine, not just a warning.
DuPage County Barking & Nuisance Animal Rule
Some RestrictionsDuPage County Code § 5-3(O)(2)
No person shall permit at any time his animal to:1.Run uncontrolled;2.Harass persons or vehicles by chasing, barking, biting or otherwise presenting as a threat to public safety. A threat to public safety includes, but is not limited to, the disruption of traffic flow or causing of a vehicular accident.3.Attack other animals;4.Damage property other than the owner's;
Amplified Music & Outdoor Sound
Outside loudspeakers and public address systems are banned countywide unless the property owner first applies to the Economic Development and Planning Director for approval.
DuPage County Outdoor PA System Permit
Significant RestrictionsSec. 37-414
Outside loudspeakers and public address systems shall not be permitted on any property unless specific application is made to the Director, Department of Economic Development and Planning. Said application shall show the intended use of the system and the expected range of the sound emanating from the system. The applicant shall be required to submit a certificate of compliance with the perform...
Decibel Limits
DuPage County caps sound reaching a residential-zoned property at 71 decibels from 7 a.m. to 10 p.m. and 61 decibels overnight, under the zoning ordinance's noise performance standards for unincorporated areas.
DuPage County Noise Decibel Limits (Sec. 37-1010)
Some RestrictionsSec. 37-1010
No person shall cause or allow the emission of sound during the hours of 7:00 a.m. to 10:00 p.m. (daytime hours) which exceeds the allowable octave band sound pressure level (dB) of seventy-one (71) dB ... during the hours of 10:00 p.m. to 7:00 a.m. (night time hours) which exceeds the allowable octave band sound pressure level (dB) of sixty-one (61) dB ... when the sound is measured at any poi...
Noise Ordinances by City in DuPage County
1 cities in DuPage County have their own noise ordinances rules. Each link goes to that city's dedicated page with code citations.
All DuPage County ordinances
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