Quiet hours in Boone County, MO — also called the noise ordinance, nighttime noise rules, or residential quiet time — define the hours during which excessive noise is prohibited.
Boone County has no county-wide noise ordinance with set quiet hours in unincorporated areas. State law (RSMo 574.010) governs unreasonable noise that knowingly disturbs another person. Columbia, the county seat, sets its own quiet hours by city code.
Boone County's authority under RSMo Ch. 64 (county zoning) does not include a numeric noise ordinance for unincorporated areas. The county defers to RSMo 574.010 (peace disturbance), which makes it an offense to unreasonably and knowingly disturb or alarm another person by loud noise. There is no decibel limit or fixed quiet-hour window enforced by the county. Boone County Sheriff's deputies respond to peace disturbance calls. Within Columbia city limits and other municipalities (Ashland, Centralia, Hallsville, Sturgeon, Rocheport, Hartsburg, Harrisburg), the city's own noise code applies.
Peace disturbance under RSMo 574.010 is a class B misdemeanor on first conviction (up to 6 months jail, $1,000 fine) and a class A misdemeanor on subsequent convictions (up to 1 year jail, $2,000 fine).
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See how Boone County's quiet hours rules stack up against other locations.
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