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Washington, IL

Flood Risk Score: 9/100 · Rank #2842 of 3,277 counties

Washington County in Illinois has 2 FEMA disaster declarations on record covering 2005–2024, 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 #2842 of 3,277 U.S. counties, with 1 NFIP flood insurance claims totaling $40,893 in payouts. Flood risk is relatively low compared to the national average.

9
Risk Score
1
NFIP Claims
$40,893
Total Payouts
2
Disasters
$40,893
Avg Claim
1
Active Policies

FEMA Disaster Declarations in Washington County

The 2 most recent federally declared disasters affecting Washington County, IL (2005–2024). Total declarations on record: 2.

DeclaredIncident TypeTitleFEMA Disaster #
Sep 20, 2024FloodSevere Storms, Tornadoes, Straight-Line Winds, and FloodngDR-4819
Sep 7, 2005HurricaneHurricane Katrina EvacuationDR-3230

Score Breakdown

The composite score of 9 is calculated from four weighted factors. See our methodology for details.

Claims Density
40%
0
Disaster Frequency
25%
4
Claim Severity
20%
0
Year-over-Year Trend
15%
50

Other Counties in Illinois

CountyGradeScoreClaimsDisasters
LawrenceA932
ShelbyA902
DouglasA962
CrawfordA903
LivingstonA923
McDonoughA902
View All Counties in Illinois

Frequently Asked Questions

How many FEMA disaster declarations does Washington County, IL have?

Washington County, IL has 2 federal disaster declarations on FEMA record (2005–2024). The 2 most recent are: Severe Storms, Tornadoes, Straight-Line Winds, and Floodng (declared Sep 20, 2024, DR-4819); 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 Washington County, IL?

Washington County is graded A (composite score 9/100, low risk). It ranks #2842 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 Washington County?

1 NFIP flood insurance claims have been filed in Washington County, IL, totaling $40,893 in payouts. The average claim is $40,893. Source: FEMA FimaNfipClaims v2 dataset.

Has Washington County, IL had any recent flood disasters?

Yes. The most recent FEMA declaration affecting Washington County was Severe Storms, Tornadoes, Straight-Line Winds, and Floodng on Sep 20, 2024 (DR-4819). The county has 2 declared disasters in the OpenFEMA record covering 2005–2024.

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.