Cook County, IL Hurricane Preparedness: Flood Elevation (2026)
Minimum elevation requirements for structures in flood zones, including freeboard standards above base flood elevation and elevation certificate requirements.
Research in progress
We are currently verifying Cook County's specific local ordinance for flood elevation. In the meantime,Illinois state law generally applies, and below you'll find guidance for finding the official rules and links to related Cook County ordinances we've already verified.
Illinois State Law Context
Illinois state law provides the baseline framework for flood elevation across all municipalities in the state. Individual cities like Cook County may adopt additional local rules on top of state requirements, which is what makes checking your specific city ordinance important. For Cook County residents, the safest approach is to follow state law as a baseline and contact City Hall for any additional local requirements.
You can browse all Illinois hurricane preparedness to see how cities across the state regulate this topic.
How to find official Cook County Flood Elevation rules
- Search for "Cook County IL municipal code" to find your city's online code portal (Municode, eCode360, or American Legal Publishing are the most common).
- Look for chapters covering hurricane preparedness, zoning, nuisance, or property maintenance — that's where most flood elevation rules live.
- Contact Cook County City Hall's code enforcement, planning, or community development department for clarification.
- Check with your HOA if applicable — many HOAs have stricter rules than the city itself.