Jefferson, IA
Jefferson County in Iowa has 7 FEMA disaster declarations on record covering 1965–2013, most recently Severe Storms, Straight-Line Winds, and Flooding on May 31, 2013 (DR-4119). Its flood risk grade is A (Low risk), ranking #1645 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 7 most recent federally declared disasters affecting Jefferson County, IA (1965–2013). Total declarations on record: 7.
| Declared | Incident Type | Title | FEMA Disaster # |
|---|---|---|---|
| May 31, 2013 | Flood | Severe Storms, Straight-Line Winds, and Flooding | DR-4119 |
| Sep 10, 2005 | Hurricane | Hurricane Katrina Evacuation | DR-3239 |
| Jul 2, 1998 | Flood | Severe Storms, Tornadoes and Flooding | DR-1230 |
| Jul 9, 1993 | Flood | Severe Storms & Flooding | DR-996 |
| May 23, 1973 | Flood | Severe Storms & Flooding | DR-386 |
| Aug 14, 1969 | Flood | Heavy Rains & Flooding | DR-269 |
| Apr 22, 1965 | Flood | Flooding | DR-193 |
Score Breakdown
The composite score of 11 is calculated from four weighted factors. See our methodology for details.
Other Counties in Iowa
| County | Grade | Score | Claims | Disasters |
|---|---|---|---|---|
| Sac and Fox Tribe of the Mississippi in Iowa | A | 11 | 0 | 7 |
| Adams | A | 11 | 0 | 6 |
| Appanoose | A | 11 | 0 | 6 |
| Boone | A | 11 | 0 | 6 |
| Cherokee | A | 11 | 4 | 7 |
| Dallas | A | 11 | 1 | 7 |
More Counties in Iowa
Frequently Asked Questions
How many FEMA disaster declarations does Jefferson County, IA have?
Jefferson County, IA has 7 federal disaster declarations on FEMA record (1965–2013). The 5 most recent are: Severe Storms, Straight-Line Winds, and Flooding (declared May 31, 2013, DR-4119); 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 May 23, 1973, DR-386). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.
What is the flood risk grade for Jefferson County, IA?
Jefferson County is graded A (composite score 11/100, low risk). It ranks #1645 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, IA, totaling $0 in payouts. The average claim is $0. Source: FEMA FimaNfipClaims v2 dataset.
Has Jefferson County, IA had any recent flood disasters?
Yes. The most recent FEMA declaration affecting Jefferson County was Severe Storms, Straight-Line Winds, and Flooding on May 31, 2013 (DR-4119). The county has 7 declared disasters in the OpenFEMA record covering 1965–2013.
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.
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.