DeKalb, IL
DeKalb County in Illinois has 4 FEMA disaster declarations on record covering 1973–2013, most recently Severe Storms, Straight-Line Winds, and Flooding on May 10, 2013 (DR-4116). Its flood risk grade is A (Low risk), ranking #2147 of 3,277 U.S. counties, with 2 NFIP flood insurance claims totaling $0 in payouts. Flood risk is relatively low compared to the national average.
FEMA Disaster Declarations in DeKalb County
The 4 most recent federally declared disasters affecting DeKalb County, IL (1973–2013). Total declarations on record: 4.
| Declared | Incident Type | Title | FEMA Disaster # |
|---|---|---|---|
| May 10, 2013 | Flood | Severe Storms, Straight-Line Winds, and Flooding | DR-4116 |
| Sep 7, 2005 | Hurricane | Hurricane Katrina Evacuation | DR-3230 |
| Jun 10, 1974 | Flood | Severe Storms & Flooding | DR-438 |
| Apr 26, 1973 | Flood | Severe Storms & Flooding | DR-373 |
Score Breakdown
The composite score of 10 is calculated from four weighted factors. See our methodology for details.
Other Counties in Illinois
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Frequently Asked Questions
How many FEMA disaster declarations does DeKalb County, IL have?
DeKalb County, IL has 4 federal disaster declarations on FEMA record (1973–2013). The 4 most recent are: Severe Storms, Straight-Line Winds, and Flooding (declared May 10, 2013, DR-4116); Hurricane Katrina Evacuation (declared Sep 7, 2005, DR-3230); Severe Storms & Flooding (declared Jun 10, 1974, DR-438); Severe Storms & Flooding (declared Apr 26, 1973, DR-373). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.
What is the flood risk grade for DeKalb County, IL?
DeKalb County is graded A (composite score 10/100, low risk). It ranks #2147 of 3,277 U.S. counties for flood risk in our scoring model. The grade combines NFIP claims density (40%), disaster frequency (25%), claim severity (20%), and year-over-year trend (15%).
How many NFIP flood insurance claims have been filed in DeKalb County?
2 NFIP flood insurance claims have been filed in DeKalb County, IL, totaling $0 in payouts. The average claim is $0. Source: FEMA FimaNfipClaims v2 dataset.
Has DeKalb County, IL had any recent flood disasters?
Yes. The most recent FEMA declaration affecting DeKalb County was Severe Storms, Straight-Line Winds, and Flooding on May 10, 2013 (DR-4116). The county has 4 declared disasters in the OpenFEMA record covering 1973–2013.
this entity is one of the data points covered by this site’s U.S. flood risk, NFIP claims, and disaster declarations dataset. The detail above comes directly from FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims; the context that follows situates the headline numbers against the broader distribution across U.S. ZIPs, counties, and states.
The methodology behind every numeric value on this page is publicly documented on the FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for this entity’s peers within U.S. ZIPs, counties, and states. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.
Source: FEMA OpenFEMA datasets, 2026.