Sign Regulations in Lake County, IL (2026)
4 county-level rules, plus city-specific rules for 1 city in Lake County, Illinois.
Verified from official government sources
Garage Sale Signs
Unincorporated Lake County allows up to two garage sale signs per event, each capped at four square feet, placed only on the sale lot or on private property with the owner's consent.
Lake County garage sale sign limits
Some RestrictionsLake County Code § 151.114(O)(4)
(4) Garage sales. (a) Garage sales shall be allowed in all zoning districts without a permit, provided that no more than two garage sales shall be conducted on a zoning lot in any calendar year. (b) No garage sale shall be conducted for longer than three consecutive days duration. (c) Sales events may be conducted during daylight hours only. (d) No more than two signs may be used to advertise a...
Holiday Displays
Unincorporated Lake County exempts holiday lights and decorations from sign permitting, but only if displayed no more than 60 days per year.
Lake County holiday light duration limit
Light RestrictionsLake County Code § 151.173(D)(3)
Signs exempt from regulation. The following signs shall be exempt from regulation under this section: ... (3) Holiday lights and decorations with no commercial message, not to exceed 60 days per year;
Digital Billboards
Electronic message board signs are allowed on unincorporated Lake County land but capped in size, dimmed at night, and barred near homes.
Lake County digital billboard rules
Some RestrictionsLake County Code § 151.173(k)
Electronic message boards are allowed, subject to the following standards. 1. The electronic message board component of a freestanding sign may comprise no more than 60% of the sign's total allowed sign face area... 6. The message shall not flash. Any message that remains visible for less than two seconds shall be considered as flashing. 8. Electronic message board signs are prohibited within 1...
Window Signs
In unincorporated Lake County, window signs need no permit in nonresidential and institutional zoning districts but are capped at 25% of window area under the county's Unified Development Ordinance; they're barred entirely in residential districts.
Lake County window sign area limit
Some RestrictionsLake County Code § 151.173
Window sign N A[j] A[j] ... Window No limit 25% of window area N/A ... Except for banners, flags, temporary signs, and window signs conforming in all respects with the requirements of this section, all signs shall be constructed of permanent materials and shall be permanently attached to the ground, a building, or another structure by direct attachment to a rigid wall, frame, or structure.
Sign Regulations by City in Lake County
1 cities in Lake County have their own sign regulations rules. Each link goes to that city's dedicated page with code citations.
All Lake County ordinances
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