Winnebago County, IL Noise Ordinances: Decibel Limits (2026)
Key Facts
- Governing law
- Winnebago County Code § 50-300
- Metric used
- 100-ft audibility, not decibels
- Exempt: emergency/safety work
- Always exempt
- Exempt: farm/construction noise
- If heard 100+ ft away
- First offense fine
- $100-$500 per violation
- Repeat offense fine
- $500-$1,000 within 1 year
Summary
Winnebago County's noise ordinance sets no decibel-meter standard for the unincorporated county; instead it defines which noise sources fall outside its nuisance rule. Code § 50-300 exempts emergency and public-safety equipment, farm/industrial/construction noise audible past 100 feet, and any event already holding a special-event or special-use permit from the noise division entirely.
The following sources of noise are exempt from application of this division:(1)Noise generated by emergency equipment and work necessary for law enforcement, fire prevention, or for the health, safety, and welfare of the public;(2)Noise generated by agricultural, industrial, construction, repair, or remodeling work where the noise from such can be heard from a distance of 100 feet or more from the source of the noise; and(3)Noise generated by events or occasions for which a permit (e.g. special event, special use) was applied for and granted. ... Any person who violates any provision of this division shall be deemed to have committed an ordinance violation and shall be fined a minimum of $100.00 and a maximum of $500.00 per violation. Each 24-hour period in which, or during which, a violation occurs shall constitute a separate offense. Second or subsequent violations of section 50-301 within a one-year period shall incur a penalty of not less than $500.00 and not more than $1,000.00.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 64).
Full Breakdown
Chapter 50, Article V, Division 3, the 'Noise Ordinance of Winnebago County, Illinois' (Ord. No. 2025-CO-090, adopted Dec. 11, 2025), does not measure noise in decibels. It defines a 'sound amplification device' at § 50-298 as any machine that amplifies the human voice, music, motor-vehicle sound or any other noise, including speakers, amplifiers, bullhorns, megaphones, radios and loudspeakers, and covers 'instrument,' meaning any musical instrument whether amplified or not.
Section 50-299 declares any noise made in violation of the division a public nuisance, but the division only reaches conduct in the unincorporated county, outside any city, village or incorporated town's limits. Section 50-300 then carves out three categories that never trigger the division at all: noise from emergency equipment and law-enforcement, fire-prevention, health or safety work; noise from agricultural, industrial, construction, repair or remodeling work audible 100 feet or more from its source; and noise from any event or occasion holding a granted special-event or special-use permit.
Enforcement runs through the Winnebago County Sheriff's Office under § 50-302, which may proceed through the chapter 4 administrative adjudication process at its discretion rather than through a criminal case. Section 50-303 sets penalties at $100 to $500 per violation, with each 24-hour period of ongoing violation counted separately; a second or subsequent violation of the actual noise-limit section within one year jumps the fine to $500 to $1,000. The state's attorney can also seek an injunction, including a temporary restraining order, to abate the nuisance in circuit court.
Violations & Fines
A first violation of the noise division carries a fine of $100 to $500, with every 24-hour period of continued violation billed as a separate offense under § 50-303. A second or subsequent violation within one year jumps the fine to $500 to $1,000. The sheriff's office enforces the division and can route a case through the county's administrative adjudication process instead of criminal court, and the state's attorney can seek an injunction to stop an ongoing nuisance.
Frequently Asked Questions
Does Winnebago County measure noise in decibels?
Is construction noise exempt from the county noise rule?
What's the fine for a noise violation in unincorporated Winnebago County?
Who enforces the noise ordinance in the unincorporated county?
Sources & Official References
Other rules in Winnebago County
Compare Winnebago County to another location·View the Illinois noise ordinances overview
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