1 county-level rule, plus city-specific rules for 1 city in Sangamon County, Illinois.
Verified from official government sources
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.
720 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.
1 cities in Sangamon County have their own noise ordinances rules. Each link goes to that city's dedicated page with code citations.
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