1 county-level rule, plus city-specific rules for 4 cities in Snohomish County, Washington.
Verified from official government sources
Snohomish County Code Chapter 10.01 (Noise Control) regulates noise in unincorporated areas, with sound-level standards adopted from WAC 173-60. SCC 10.01.020 defines nighttime as 10:00 p.m. to 7:00 a.m. weekdays and 10:00 p.m. to 9:00 a.m. weekends. SCC 10.01.040 prohibits public disturbance noise originating from any property. Receiving residential property limits drop by 10 dB(A) at night - typically 50 dB(A) night versus 60 dB(A) day. Cities like Everett, Lynnwood, Marysville, and Edmonds enforce their own municipal noise codes within city limits.
4 cities in Snohomish County have their own noise ordinances rules. Each link goes to that city's dedicated page with code citations.
See every category we cover for Snohomish County — parking, noise, fences, fires, animals, pools, and more.
Snohomish County Ordinance Hub →