In most residential zones of unincorporated Jefferson County, the maximum number of cats, dogs, potbelly pigs, and similar domesticated pets you may keep is 3. Litters of puppies and kittens may be kept until weaned. Agricultural lots meeting minimum size have no limit.
Jefferson County's "Domestic Animals Permitted by Zoning" chart (note A) caps common household pets at 3 across all mountain-residential and residential zone districts. Litters of puppies and kittens are exempt until weaned. On agricultural-zoned lots (note B), properties meeting the minimum lot size have no pet limit for personal use, but properties not meeting minimum size revert to the 3-pet cap. Commercial boarding of animals is not permitted without a special use permit. Note this zoning pet cap is separate from the Animal Control dog-licensing requirement (license required for each dog over 4 months old).
Keeping more than 3 pets in a capped zone is a zoning violation enforced by Planning & Zoning. Unlicensed dogs are separately a petty offense under the Animal Control Regulation ($50 minimum fine).
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Jefferson County, CO
Jefferson County has no ordinance banning backyard compost piles, and residential composting is allowed. There is no county-run curbside compost mandate for ...
Jefferson County, CO
Jefferson County has no general county ban on residential artificial turf; check your HOA and city. Colorado's HB22-1151 turf-replacement program funds swapp...
Jefferson County, CO
Colorado protects water-wise landscaping. Under CRS 38-33.3-106.5, an HOA may not prohibit xeriscape or drought-tolerant vegetative landscapes on property a ...
Jefferson County, CO
Colorado law lets residents of single-family homes and buildings of four or fewer units collect rooftop rainwater in up to two rain barrels totaling 110 gall...
Jefferson County, CO
Jefferson County runs no outdoor-watering ordinance; restrictions come from your water utility. Much of metro Jeffco is served by Denver Water, which in 2026...
Jefferson County, CO
Every landowner in unincorporated Jefferson County has a legal duty to manage noxious weeds. State law (CRS 35-5.5-104): 'It is the duty of all persons to us...
See how Jefferson County's pet limits rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.