10 county-level rules, plus city-specific rules for 2 cities in Adams County, Colorado.
Verified from official government sources
Unincorporated Adams County has no separate noise ordinance; the Colorado state noise statute applies. In residential zones, noise measured 25 feet beyond your property line may not exceed 55 dB(A) daytime (7am-7pm) or 50 dB(A) at night.
Adams County unincorporated sets no separate construction-hours ordinance. Under CRS 25-12-103, construction is held to the industrial-zone noise limits (80 dB(A) day, 75 dB(A) night) for the permitted construction period.
Adams County's Animal Control Code makes it unlawful for a dog to bark, howl, or yelp audible beyond the premises for more than 20 consecutive minutes during the day (7am-9pm) or 10 minutes at night (9:01pm-6:59am).
Adams County Animal Control Code (Res. 2022-043) Sec. 5-10
It shall be unlawful for any person who owns or keeps a dog making any noises or disturbances by barking, howling, yelping, whining or other utterance audible beyond the premises... for a consecutive period in excess of twenty (20) minutes during the day (7 A.M. to 9 P.M.) or... ten (10) minutes during the night (9:01 P.M. to 6:59 A.M.).
Adams County sets no specific leaf-blower ordinance for the unincorporated area. Leaf-blower noise falls under the general Colorado noise statute (CRS 25-12-103): 55 dB(A) daytime / 50 dB(A) night residential, measured 25 feet beyond the property line.
Unincorporated Adams County has no standalone amplified-sound ordinance. Amplified music is limited by CRS 25-12-103: it may not exceed 55 dB(A) daytime / 50 dB(A) night in residential zones, measured 25 feet beyond the property line.
Adams County cannot regulate aircraft noise; airspace and aircraft operations are exclusively governed by the FAA under federal law. Denver International Airport and Rocky Mountain Metropolitan traffic overfly parts of the county.
Industrial noise in unincorporated Adams County is capped by CRS 25-12-103 at 80 dB(A) daytime and 75 dB(A) at night for industrial zones, and 70/65 dB(A) for light industrial, measured 25 feet beyond the property line.
Adams County uses Colorado's statewide decibel limits (CRS 25-12-103), measured 25 feet beyond the property line: Residential 55/50, Commercial 60/55, Light industrial 70/65, Industrial 80/75 dB(A) (day/night).
There is no county outdoor-music ordinance. Outdoor and backyard music must stay within Colorado's residential noise limits (CRS 25-12-103): 55 dB(A) daytime / 50 dB(A) night, measured 25 feet beyond the property line.
Adams County has no unincorporated-area vehicle-noise ordinance. Vehicle noise is governed by Colorado's statewide muffler law (CRS 42-4-225), which requires a working muffler and prohibits amplified exhaust or cutout devices.
2 cities in Adams 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 Adams County — parking, noise, fences, fires, animals, pools, and more.
Adams County Ordinance Hub →