St. Clair, IL
St. Clair County in Illinois has 9 FEMA disaster declarations on record covering 1969–2024, most recently Severe Storms, Tornadoes, Straight-Line Winds, and Floodng on Sep 20, 2024 (DR-4819). Its flood risk grade is A (Low risk), ranking #289 of 3,277 U.S. counties, with 54 NFIP flood insurance claims totaling $526,136 in payouts. Flood risk is relatively low compared to the national average.
FEMA Disaster Declarations in St. Clair County
The 9 most recent federally declared disasters affecting St. Clair County, IL (1969–2024). Total declarations on record: 9.
| Declared | Incident Type | Title | FEMA Disaster # |
|---|---|---|---|
| Sep 20, 2024 | Flood | Severe Storms, Tornadoes, Straight-Line Winds, and Floodng | DR-4819 |
| Oct 14, 2022 | Flood | Severe Storm and Flooding | DR-4676 |
| Sep 19, 2019 | Flood | Severe Storms and Flooding | DR-4461 |
| Sep 7, 2005 | Hurricane | Hurricane Katrina Evacuation | DR-3230 |
| Jul 9, 1993 | Flood | Severe Storms & Flooding | DR-997 |
| Oct 7, 1986 | Flood | Severe Storms & Flooding | DR-776 |
| Apr 30, 1979 | Flood | Severe Storms & Flooding | DR-583 |
| Apr 26, 1973 | Flood | Severe Storms & Flooding | DR-373 |
| Aug 30, 1969 | Flood | Heavy Rains & Flooding | DR-276 |
Score Breakdown
The composite score of 18 is calculated from four weighted factors. See our methodology for details.
Other Counties in Illinois
| County | Grade | Score | Claims | Disasters |
|---|---|---|---|---|
| Winnebago | A | 18 | 23 | 6 |
| McHenry | A | 18 | 24 | 6 |
| Rock Island | A | 20 | 46 | 10 |
| Kane | A | 16 | 9 | 5 |
| Calhoun | A | 14 | 21 | 12 |
| Jersey | A | 14 | 29 | 10 |
More Counties in Illinois
Frequently Asked Questions
How many FEMA disaster declarations does St. Clair County, IL have?
St. Clair County, IL has 9 federal disaster declarations on FEMA record (1969–2024). The 5 most recent are: Severe Storms, Tornadoes, Straight-Line Winds, and Floodng (declared Sep 20, 2024, DR-4819); Severe Storm and Flooding (declared Oct 14, 2022, DR-4676); Severe Storms and Flooding (declared Sep 19, 2019, DR-4461); Hurricane Katrina Evacuation (declared Sep 7, 2005, DR-3230); Severe Storms & Flooding (declared Jul 9, 1993, DR-997). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.
What is the flood risk grade for St. Clair County, IL?
St. Clair County is graded A (composite score 18/100, low risk). It ranks #289 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 St. Clair County?
54 NFIP flood insurance claims have been filed in St. Clair County, IL, totaling $526,136 in payouts. The average claim is $9,743. Source: FEMA FimaNfipClaims v2 dataset.
Has St. Clair County, IL had any recent flood disasters?
Yes. The most recent FEMA declaration affecting St. Clair County was Severe Storms, Tornadoes, Straight-Line Winds, and Floodng on Sep 20, 2024 (DR-4819). The county has 9 declared disasters in the OpenFEMA record covering 1969–2024.
For this entity, the underlying data on this page comes from FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims. The breakdown above is the federal record; the paragraphs below add the per-entity context that makes the headline numbers usable for a real decision rather than just a data lookup.
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.