Outdoor Lighting in Lake County, IL (2026)
2 county-level rules, plus city-specific rules for 1 city in Lake County, Illinois.
Verified from official government sources
Dark Sky Rules
Unincorporated Lake County caps outdoor light spillover at 0.5 footcandle on residential-abutting property lines and requires all luminaires to be shielded against glare.
Unincorporated Lake County lighting shielding
Some RestrictionsLake County Code § 151.168(A)(3)(a), (c)
Outdoor lighting shall not exceed one-half footcandle at any point on the adjoining property if the subject property abuts a residential zoning district or a lot containing a residential use ... All luminaires shall be shielded to prevent light and glare spillover to adjacent residential property and abutting rights-of-way
Light Trespass & Shielding
In unincorporated Lake County, outdoor lighting can't exceed one-half footcandle at the property line abutting residential land, or one footcandle abutting nonresidential land or a right-of-way.
Lake County light trespass footcandle caps
Some RestrictionsLake County Code § 151.168(A)(3)(a)-(b)
Outdoor lighting shall not exceed one-half footcandle at any point on the adjoining property if the subject property abuts a residential zoning district or a lot containing a residential use; ... Outdoor lighting shall not exceed one footcandle at any point on the adjoining property if the subject property abuts a nonresidential zoning district or lot containing a nonresidential use or at the r...
Outdoor Lighting by City in Lake County
1 cities in Lake County have their own outdoor lighting rules. Each link goes to that city's dedicated page with code citations.
All Lake County ordinances
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