Gallatin, MT
Gallatin County in Montana has 2 FEMA disaster declarations on record covering 1981–2005, most recently Hurricane Katrina Evacuation on Sep 13, 2005 (DR-3253). Its flood risk grade is A (Low risk), ranking #2627 of 3,277 U.S. counties, with 4 NFIP flood insurance claims totaling $38,844 in payouts. Flood risk is relatively low compared to the national average.
FEMA Disaster Declarations in Gallatin County
The 2 most recent federally declared disasters affecting Gallatin County, MT (1981–2005). Total declarations on record: 2.
| Declared | Incident Type | Title | FEMA Disaster # |
|---|---|---|---|
| Sep 13, 2005 | Hurricane | Hurricane Katrina Evacuation | DR-3253 |
| May 27, 1981 | Flood | Severe Storms & Flooding | DR-640 |
Score Breakdown
The composite score of 9 is calculated from four weighted factors. See our methodology for details.
Other Counties in Montana
| County | Grade | Score | Claims | Disasters |
|---|---|---|---|---|
| Roosevelt | A | 9 | 0 | 2 |
| Sheridan | A | 9 | 0 | 2 |
| Sweet Grass | A | 9 | 0 | 2 |
| Yellowstone | A | 9 | 2 | 3 |
| Lake | A | 9 | 0 | 3 |
| Prairie | A | 9 | 0 | 2 |
More Counties in Montana
Frequently Asked Questions
How many FEMA disaster declarations does Gallatin County, MT have?
Gallatin County, MT has 2 federal disaster declarations on FEMA record (1981–2005). The 2 most recent are: Hurricane Katrina Evacuation (declared Sep 13, 2005, DR-3253); Severe Storms & Flooding (declared May 27, 1981, DR-640). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.
What is the flood risk grade for Gallatin County, MT?
Gallatin County is graded A (composite score 9/100, low risk). It ranks #2627 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 Gallatin County?
4 NFIP flood insurance claims have been filed in Gallatin County, MT, totaling $38,844 in payouts. The average claim is $9,711. Source: FEMA FimaNfipClaims v2 dataset.
Has Gallatin County, MT had any recent flood disasters?
Yes. The most recent FEMA declaration affecting Gallatin County was Hurricane Katrina Evacuation on Sep 13, 2005 (DR-3253). The county has 2 declared disasters in the OpenFEMA record covering 1981–2005.
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.