Flood zones in Illinois
Check FEMA flood zones and find the floodplain office.
Illinois floodplain and flood maps
Illinois's floodplain program: the flood maps, the extra rules that apply to building or rebuilding near water, and who runs the program locally.
4 more options
- FEMA Flood Map Service CenterOfficial source for flood insurance rate maps. Enter an address to see the current flood zone and download the FIRM panel and letters of map change.
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- FEMA Disaster DeclarationsSearch federal disaster and emergency declarations by state, county and incident to see whether an area was declared and what assistance was authorized.
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- FEMA Increased Cost of ComplianceFlood insurance coverage that helps pay to elevate, relocate, demolish or floodproof a substantially damaged building.
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- FEMA National Flood Hazard Layer ViewerInteractive nationwide map of current flood zones, base flood elevations and map panels.
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About flood zones
FEMA flood maps divide land into zones. Zones starting with A or V are high risk and usually require flood insurance for a mortgage. Zone X is lower risk. The county or city floodplain office enforces building rules in mapped floodplains, and only FEMA can change a map.