Sioux City, IA Outdoor Lighting: Billboard Lighting (2026)
Key Facts
- Flashing light
- Prohibited
- Citywide brightness cap
- 0.3 footcandles over ambient
- Illumination color
- White light only
- Citation
- Sec. 25.05.180.4(5)(h)
Summary
Sioux City lets off-premise advertising signs (billboards) be lit, but the light cannot flash, and citywide sign-illumination standards cap glare and brightness.
Subsection 25.05.180.4 Off-Premise Advertising Signs ... 5. Additional Regulations. Off-premises advertising signs shall: ... h. May be illuminated but shall not flash;
Full Breakdown
Subsection 25.05.180.4, Item 5.h of the Sioux City Municipal Code allows off-premise advertising signs to be illuminated but bars any flashing light. The citywide illumination rule at Subsection 25.05.170.5 -- which governs signs generally, including billboards -- requires light be shielded or indirect, white light only, and caps sign illumination at 0.3 footcandles over ambient light. Billboards along Interstate 29 and the state's primary highways face additional state-level review through the Iowa DOT under Iowa Code ch. 306B.
Violations & Fines
A violation of Title 25's sign standards is a municipal infraction or, alternatively, a misdemeanor punishable under Sec. 1.04.100, per Subsection 25.06.160.3, with each day of a continuing violation a separate offense.
Frequently Asked Questions
Can a billboard in Sioux City flash or animate its lighting?
Is there a citywide brightness limit for illuminated signs in Sioux City?
Sources & Official References
Other rules in Sioux City
Compare Sioux City to another location·View the Iowa outdoor lighting overview
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