Jefferson, IL
Jefferson County in Illinois has 1 FEMA disaster declaration on record covering 2005, most recently Hurricane Katrina Evacuation on Sep 7, 2005 (DR-3230). Its flood risk grade is A (Low risk), ranking #3091 of 3,277 U.S. counties, with 0 NFIP flood insurance claims totaling $0 in payouts. Flood risk is relatively low compared to the national average.
FEMA Disaster Declarations in Jefferson County
The 1 most recent federally declared disasters affecting Jefferson County, IL (2005). Total declarations on record: 1.
| Declared | Incident Type | Title | FEMA Disaster # |
|---|---|---|---|
| Sep 7, 2005 | Hurricane | Hurricane Katrina Evacuation | DR-3230 |
Score Breakdown
The composite score of 8 is calculated from four weighted factors. See our methodology for details.
Other Counties in Illinois
| County | Grade | Score | Claims | Disasters |
|---|---|---|---|---|
| Madison | A | 8 | 37 | 6 |
| Stephenson | A | 8 | 12 | 5 |
| Cook | A | 8 | 198 | 9 |
| Peoria | A | 8 | 24 | 6 |
| Bond | A | 8 | 1 | 1 |
| Champaign | A | 8 | 2 | 1 |
More Counties in Illinois
Frequently Asked Questions
How many FEMA disaster declarations does Jefferson County, IL have?
Jefferson County, IL has 1 federal disaster declarations on FEMA record (2005). The 1 most recent are: Hurricane Katrina Evacuation (declared Sep 7, 2005, DR-3230). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.
What is the flood risk grade for Jefferson County, IL?
Jefferson County is graded A (composite score 8/100, low risk). It ranks #3091 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 Jefferson County?
0 NFIP flood insurance claims have been filed in Jefferson County, IL, totaling $0 in payouts. The average claim is $0. Source: FEMA FimaNfipClaims v2 dataset.
Has Jefferson County, IL had any recent flood disasters?
Yes. The most recent FEMA declaration affecting Jefferson County was Hurricane Katrina Evacuation on Sep 7, 2005 (DR-3230). The county has 1 declared disasters in the OpenFEMA record covering 2005.
The this entity record above pulls directly from FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims. What follows is the per-entity context — how this entity sits in the broader U.S. flood risk, NFIP claims, and disaster declarations distribution and which underlying factors drive the headline numbers.
Every number on this page links back to FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
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.