Cass County, MO Noise Ordinances: Quiet Hours (2026)

670, Peace Disturbance, is the county's general noise-complaint ordinance for unincorporated Cass County. It is committed when a person unreasonably and knowingly disturbs or alarms another person or persons by loud noise, by face-to-face offensive language likely to provoke an immediate violent response, by threatening a felonious act, by fighting, or by creating a noxious and offensive odor. 660 make clear the offense reaches conduct in a public place, meaning any place open to the public at the time, as well as on private property, meaning any place not open to the public, whether owned publicly or privately.

Because the loud-noise clause is written as an unreasonableness standard tied to disturbing a specific listener rather than a fixed decibel level or clock-based curfew, it applies around the clock, not only overnight; there is no separate quiet-hours window carved out in Chapter 205 for residential noise. 680, Private Peace Disturbance, separately covers a person on private property who unreasonably and purposely causes alarm to someone else on the same premises by threatening an offense or fighting, and treats separately occupied units within one building as separate premises.

00, with each day a continuing disturbance counted as a separate offense. Sheriff's deputies responding to a noise complaint in the unincorporated area document the specific disturbance and the person disturbed before a citation issues.