Noise Ordinances in Sangamon County, IL (2026)
3 county-level rules, plus city-specific rules for 1 city in Sangamon County, Illinois.
Verified from official government sources
Quiet Hours
Sangamon County (the seat of state capital Springfield) does not enforce a county-wide decibel-based noise ordinance with set quiet hours for unincorporated areas. Loud, disturbing, or unreasonable noise is handled under Illinois state law - the disorderly conduct statute, 720 ILCS 5/26-1, which makes it a Class C misdemeanor to make any unreasonable or offensive act, display, or utterance that disturbs or alarms others. Sangamon County Sheriff (217-753-6666) is the responding agency. Inside city limits of Springfield and other municipalities, local noise ordinances apply instead.
Noise Quiet Hours in Sangamon County
Some Restrictions720 ILCS 5/26-1(a)(1), (b)
Sec. 26-1. Disorderly conduct. (a) A person commits disorderly conduct when he or she knowingly: (1) Does any act in such unreasonable manner as to alarm or disturb another and to provoke a breach of the peace... (b) Sentence. A violation of subsection (a)(1) of this Section is a Class C misdemeanor.
Barking Dogs
In unincorporated Sangamon County, an animal that creates a loud disturbance lasting more than 10 minutes and is documented by law enforcement or animal control is legally a nuisance.
Barking Dog Nuisance Rules in Sangamon County
Some RestrictionsSangamon County Code § 6.04.095
No person owning, possessing, or harboring any animal within unincorporated Sangamon County shall permit said animal to become a nuisance. An animal, other than a dog trained for law enforcement in the performance of its duty, shall be considered a nuisance if said animal: Substantially damages real or personal property other than the owner's; Causes unsanitary, dangerous, or unreasonably off...
Decibel Limits
Sangamon County caps industrial plant noise at the district boundary: 72 decibels in the lowest octave band at a residential boundary, 79 near a business district, measured with a certified sound level meter.
Industrial Noise Limits in Sangamon County
Some RestrictionsSangamon County Code § 17.34.020
At no point on the boundary of a residence or business district shall the sound pressure level of any operation or plant (other than background noises not directly under the control of the manufacturer) exceed the decibel limits in the octave bands designated below: Octave Band Frequency (cycles per second) Along Residence District Boundaries Along Business District Boundaries 0 to 75 7...
Noise Ordinances by City in Sangamon County
1 cities in Sangamon County have their own noise ordinances rules. Each link goes to that city's dedicated page with code citations.
All Sangamon County ordinances
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