Union, IA
Union County in Iowa has 7 FEMA disaster declarations on record covering 1969–2019, most recently Severe Storms and Flooding on Mar 23, 2019 (DR-4421). Its flood risk grade is A (Low risk), ranking #1482 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 Union County
The 7 most recent federally declared disasters affecting Union County, IA (1969–2019). Total declarations on record: 7.
| Declared | Incident Type | Title | FEMA Disaster # |
|---|---|---|---|
| Mar 23, 2019 | Flood | Severe Storms and Flooding | DR-4421 |
| 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 |
| Oct 2, 1992 | Flood | Severe Storms & Flooding | DR-965 |
| Sep 26, 1972 | Flood | Severe Storms & Flooding | DR-354 |
| Aug 14, 1969 | Flood | Heavy Rains & Flooding | DR-269 |
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 Union County, IA have?
Union County, IA has 7 federal disaster declarations on FEMA record (1969–2019). 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 Oct 2, 1992, DR-965). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.
What is the flood risk grade for Union County, IA?
Union County is graded A (composite score 11/100, low risk). It ranks #1482 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 Union County?
0 NFIP flood insurance claims have been filed in Union County, IA, totaling $0 in payouts. The average claim is $0. Source: FEMA FimaNfipClaims v2 dataset.
Has Union County, IA had any recent flood disasters?
Yes. The most recent FEMA declaration affecting Union County was Severe Storms and Flooding on Mar 23, 2019 (DR-4421). The county has 7 declared disasters in the OpenFEMA record covering 1969–2019.
The this entity record above pulls directly from FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims. What follows is the per-entity context — how this entity sits in the broader U.S. flood risk, NFIP claims, and disaster declarations distribution and which underlying factors drive the headline numbers.
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.