Cook County, IL Landscaping Rules: Weed Ordinances (2026)
Key Facts
- Max height
- 10 inches, grass and weeds
- Enforcer
- Cook County Dept. of Public Health
- Scope
- Unincorporated Cook County only
- First-offense fine
- $350 to $1,000
- Citation
- Cook County Code § 38-54(34)
Summary
In unincorporated Cook County, letting grass or weeds grow past ten inches is a declared public nuisance the Health Department can cite and fine.
To fail to maintain grass and weeds below ten inches in height, or to fail to maintain brush in a manner that prevents the harboring of vectors.
Full Breakdown
Cook County Code § 38-54(34) makes it unlawful to fail to maintain grass and weeds below ten inches in height, or to fail to maintain brush so it doesn't harbor vectors, on any property in the unincorporated area. The Cook County Department of Public Health enforces this Public Health and Private Nuisance Ordinance, which also covers vacant lots. Owners get a compliance notice with a deadline of up to 30 days before citation. Fines under § 38-55 run $350 to $1,000 for a first violation, $500 to $2,000 for a second, and $1,000 to $6,000 for each subsequent violation within two years, with injunctive relief available through the State's Attorney.
Violations & Fines
Fines start at $350-$1,000 for a first offense, rise to $500-$2,000 for a second, and $1,000-$6,000 for each repeat within two years; the County can also seek a court injunction.
Frequently Asked Questions
Does this rule apply inside Chicago or other Cook County suburbs?
How much time do I get before a citation is issued?
Sources & Official References
Other rules in Cook County
How Cook County compares: Cities with the Strictest Weed and Property Maintenance Rules·Compare Cook County to another location·View the Illinois landscaping rules overview
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