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A

Marshall, IA

Flood Risk Score: 13/100 · Rank #839 of 3,277 counties

Marshall County in Iowa has 10 FEMA disaster declarations on record covering 1965–2019, most recently Severe Storms and Flooding on Mar 23, 2019 (DR-4421). Its flood risk grade is A (Low risk), ranking #839 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.

13
Risk Score
0
NFIP Claims
$0
Total Payouts
10
Disasters
$0
Avg Claim
0
Active Policies

FEMA Disaster Declarations in Marshall County

The 10 most recent federally declared disasters affecting Marshall County, IA (1965–2019). Total declarations on record: 10.

DeclaredIncident TypeTitleFEMA Disaster #
Mar 23, 2019FloodSevere Storms and FloodingDR-4421
Sep 10, 2005HurricaneHurricane Katrina EvacuationDR-3239
Jul 2, 1998FloodSevere Storms, Tornadoes and FloodingDR-1230
Jul 9, 1993FloodSevere Storms & FloodingDR-996
Jul 12, 1991FloodSevere Storms & FloodingDR-911
May 26, 1990FloodSevere Storms & FloodingDR-868
Jun 24, 1974FloodSevere Storms & FloodingDR-443
Aug 14, 1969FloodHeavy Rains & FloodingDR-269
Apr 25, 1969FloodFloodingDR-259
Apr 22, 1965FloodFloodingDR-193

Score Breakdown

The composite score of 13 is calculated from four weighted factors. See our methodology for details.

Claims Density
40%
0
Disaster Frequency
25%
21
Claim Severity
20%
0
Year-over-Year Trend
15%
50

Other Counties in Iowa

CountyGradeScoreClaimsDisasters
DubuqueA13311
LeeA13210
FayetteA13311
FranklinA13011
IowaA13110
TamaA13211
View All Counties in Iowa

Frequently Asked Questions

How many FEMA disaster declarations does Marshall County, IA have?

Marshall County, IA has 10 federal disaster declarations on FEMA record (1965–2019). The 5 most recent are: Severe Storms and Flooding (declared Mar 23, 2019, DR-4421); Hurricane Katrina Evacuation (declared Sep 10, 2005, DR-3239); Severe Storms, Tornadoes and Flooding (declared Jul 2, 1998, DR-1230); Severe Storms & Flooding (declared Jul 9, 1993, DR-996); Severe Storms & Flooding (declared Jul 12, 1991, DR-911). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.

What is the flood risk grade for Marshall County, IA?

Marshall County is graded A (composite score 13/100, low risk). It ranks #839 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 Marshall County?

0 NFIP flood insurance claims have been filed in Marshall County, IA, totaling $0 in payouts. The average claim is $0. Source: FEMA FimaNfipClaims v2 dataset.

Has Marshall County, IA had any recent flood disasters?

Yes. The most recent FEMA declaration affecting Marshall County was Severe Storms and Flooding on Mar 23, 2019 (DR-4421). The county has 10 declared disasters in the OpenFEMA record covering 1965–2019.

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.