McHenry, IL
McHenry County in Illinois has 6 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 #354 of 3,277 U.S. counties, with 24 NFIP flood insurance claims totaling $289,397 in payouts. Flood risk is relatively low compared to the national average.
FEMA Disaster Declarations in McHenry County
The 6 most recent federally declared disasters affecting McHenry County, IL (1973–2013). Total declarations on record: 6.
| 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 |
| Jul 9, 1993 | Flood | Severe Storms & Flooding | DR-997 |
| Oct 7, 1986 | Flood | Severe Storms & Flooding | DR-776 |
| Jun 10, 1974 | Flood | Severe Storms & Flooding | DR-438 |
| Apr 26, 1973 | Flood | Severe Storms & Flooding | DR-373 |
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 |
|---|---|---|---|---|
| St. Clair | A | 18 | 54 | 9 |
| Winnebago | A | 18 | 23 | 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 McHenry County, IL have?
McHenry County, IL has 6 federal disaster declarations on FEMA record (1973–2013). The 5 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 Jul 9, 1993, DR-997); Severe Storms & Flooding (declared Oct 7, 1986, DR-776); Severe Storms & Flooding (declared Jun 10, 1974, DR-438). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.
What is the flood risk grade for McHenry County, IL?
McHenry County is graded A (composite score 18/100, low risk). It ranks #354 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 McHenry County?
24 NFIP flood insurance claims have been filed in McHenry County, IL, totaling $289,397 in payouts. The average claim is $12,058. Source: FEMA FimaNfipClaims v2 dataset.
Has McHenry County, IL had any recent flood disasters?
Yes. The most recent FEMA declaration affecting McHenry County was Severe Storms, Straight-Line Winds, and Flooding on May 10, 2013 (DR-4116). The county has 6 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.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for this entity is typically a peer within U.S. ZIPs, counties, and states with similar size, similar exposure, or similar geography — not the national-level summary alone.
Source: FEMA OpenFEMA datasets, 2026.