Grant County, WA Noise Ordinances: Quiet Hours (2026)

Grant County's noise ordinance, Chapter 6.24 of the Grant County Code, does not set a single countywide 'quiet hours' curfew that applies to all noise. What it does is time-limit specific exemptions. Under § 6.24.050(b), three categories of noise are exempt from the chapter from seven a.m. through ten p.m.: aircraft engine testing and maintenance not related to flight operations, the discharge of firearms on authorized shooting ranges and casual target practice, and blasting. Read together with § 6.24.040, which makes it unlawful to cause or allow any public noise disturbance or motor vehicle noise disturbance at any time in the unincorporated county, the effect is that these three noise sources lose their exemption and become subject to the general disturbance standard once the clock passes ten p.m. and until seven a.m. resumes.

A broader group of activities, listed in § 6.24.050(c), gets the same seven a.m. to ten p.m. window but with an added distance escape: they are exempt at any hour if conducted beyond one thousand feet of an occupied residence. The Grant County Sheriff's Office and Washington State law enforcement agencies enforce the chapter under § 6.24.030, evaluating after-hours complaints against the general 'unreasonably disturb or interfere with the peace and comfort' standard in § 6.24.020 rather than a fixed decibel limit.