Sangamon County, IL Noise Ordinances: Quiet Hours (2026)
Quiet hours in Sangamon County, IL, also called the noise ordinance, nighttime noise rules, or residential quiet time, define the hours during which excessive noise is prohibited.
Key Facts
- County Noise Ordinance
- None codified for unincorporated areas
- Governing Statute
- 720 ILCS 5/26-1 (disorderly conduct)
- State Noise Rules
- 35 Ill. Adm. Code Part 900-901
- Sheriff Non-Emergency
- 217-753-6666
- Springfield City Code
- Title IX, Chapter 98
- Penalty (Class C Misdemeanor)
- Up to 30 days, $1,500
Summary
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.
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.
Official source re-checked September 7, 2026: the cited page had not changed since it was quoted.
Full Breakdown
Counties in Illinois have only the noise-control authority granted under 55 ILCS 5 (Counties Code) and 415 ILCS 5 (Illinois Environmental Protection Act / Illinois Pollution Control Board). Sangamon County has not adopted a stand-alone decibel-based noise ordinance with codified quiet-hours for unincorporated land. Day-to-day noise complaints are enforced through the Illinois disorderly conduct statute 720 ILCS 5/26-1(a)(1), which prohibits any act done in such an unreasonable manner as to alarm or disturb another and provoke a breach of the peace. Statewide environmental noise standards adopted by the Illinois Pollution Control Board (35 Ill.
Adm. - and may be enforced by the IEPA. The City of Springfield (Title IX, Chapter 98 of its Code of Ordinances) prohibits excessive noise within city limits and is enforced by Springfield Police, not the county. Sangamon County Sheriff's Office handles unincorporated-area calls; chronic noise from animals (barking dogs) is handled by Sangamon County Animal Control under 510 ILCS 5 and the local animal regulation rather than by Sheriff's noise enforcement.
Violations & Fines
A disorderly conduct conviction under 720 ILCS 5/26-1(a)(1) is a Class C misdemeanor punishable by up to 30 days in jail and a fine of up to $1,500. Repeat or aggravated noise that pollutes the environment may also be cited by the Illinois EPA under the Illinois Pollution Control Board's noise rules (35 Ill. Adm. Code Part 901), which carry civil penalties.
Frequently Asked Questions
What time do quiet hours start in unincorporated Sangamon County?
Who do I call about a loud party in unincorporated Sangamon County?
Sources & Official References
Other rules in Sangamon County
How Sangamon County compares: Cities with the Strictest Noise Ordinances·Compare Sangamon County to another location·View the Illinois noise ordinances overview
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