Quiet hours in Iowa City, IA — also called the noise ordinance, nighttime noise rules, or residential quiet time — define the hours during which excessive noise is prohibited.
Iowa City Code Title 6 Chapter 4 (Noise Control) sets no fixed clock-based quiet hours. Section 6-4-1 prohibits any 'noise disturbance' - loud and raucous noise, or noise that unreasonably disturbs persons of ordinary sensitivity - 24 hours a day.
Title 6 Chapter 4 is the city's primary noise rule and uses a reasonableness standard rather than a decibel table or fixed nighttime window. Section 6-4-1 defines a 'noise disturbance' as any loud and raucous noise, or any noise that unreasonably disturbs, injures, or endangers the comfort, repose, health, peace, or safety of reasonable persons of ordinary sensitivity. Iowa Code §723.4(2) layers on top: loud and raucous noise in the vicinity of any residence or public building that causes unreasonable distress is a simple misdemeanor. Iowa City Police enforce both tracks, and persistent problems at a property can be referred to Housing Inspection Services under §8-5-5 and §6-1-2.
A §6-4-1 noise disturbance is a municipal infraction under Iowa Code §364.22. Loud and raucous noise that meets Iowa Code §723.4(2) disorderly conduct is a simple misdemeanor, up to $855 and 30 days in jail.
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