Nassau, FL
Nassau County in Florida has 21 FEMA disaster declarations on record covering 1973–2024, most recently Hurricane Milton on Oct 11, 2024 (DR-4834). Its flood risk grade is A (Low risk), ranking #767 of 3,277 U.S. counties, with 69 NFIP flood insurance claims totaling $1,594,488 in payouts. Flood risk is relatively low compared to the national average.
FEMA Disaster Declarations in Nassau County
The 21 most recent federally declared disasters affecting Nassau County, FL (1973–2024). Total declarations on record: 21.
| Declared | Incident Type | Title | FEMA Disaster # |
|---|---|---|---|
| Oct 11, 2024 | Hurricane | Hurricane Milton | DR-4834 |
| Oct 7, 2024 | Hurricane | Hurricane Milton | DR-3622 |
| Sep 28, 2024 | Hurricane | Hurricane Helene | DR-4828 |
| Aug 31, 2023 | Hurricane | Hurricane Idalia | DR-4734 |
| Dec 13, 2022 | Hurricane | Hurricane Nicole | DR-4680 |
| Sep 29, 2022 | Hurricane | Hurricane Ian | DR-4673 |
| Sep 24, 2022 | Hurricane | Tropical Storm Ian | DR-3584 |
| Aug 1, 2020 | Hurricane | Hurricane Isaias | DR-3533 |
| Oct 21, 2019 | Hurricane | Hurricane Dorian | DR-4468 |
| Aug 30, 2019 | Hurricane | Hurricane Dorian | DR-3419 |
| Sep 10, 2017 | Hurricane | Hurricane Irma | DR-4337 |
| Sep 5, 2017 | Hurricane | Hurricane Irma | DR-3385 |
| Oct 8, 2016 | Hurricane | Hurricane Matthew | DR-4283 |
| Oct 6, 2016 | Hurricane | Hurricane Matthew | DR-3377 |
| Sep 5, 2005 | Hurricane | Hurricane Katrina Evacuation | DR-3220 |
| Sep 26, 2004 | Hurricane | Hurricane Jeanne | DR-1561 |
| Sep 4, 2004 | Hurricane | Hurricane Frances | DR-1545 |
| Aug 13, 2004 | Hurricane | Tropical Storm Bonnie and Hurricane Charley | DR-1539 |
| Sep 22, 1999 | Hurricane | Hurricane Floyd Major Disaster Declarations | DR-1300 |
| Sep 14, 1999 | Hurricane | Hurricane Floyd Emergency Declarations | DR-3143 |
| May 26, 1973 | Flood | Severe Storms & Flooding | DR-387 |
Score Breakdown
The composite score of 13 is calculated from four weighted factors. See our methodology for details.
Other Counties in Florida
| County | Grade | Score | Claims | Disasters |
|---|---|---|---|---|
| Columbia | A | 13 | 14 | 18 |
| Putnam | A | 13 | 68 | 20 |
| Hendry | A | 14 | 7 | 20 |
| Highlands | A | 14 | 19 | 20 |
| Indian River | A | 14 | 81 | 22 |
| St. Lucie | A | 14 | 64 | 25 |
More Counties in Florida
Frequently Asked Questions
How many FEMA disaster declarations does Nassau County, FL have?
Nassau County, FL has 21 federal disaster declarations on FEMA record (1973–2024). The 5 most recent are: Hurricane Milton (declared Oct 11, 2024, DR-4834); Hurricane Milton (declared Oct 7, 2024, DR-3622); Hurricane Helene (declared Sep 28, 2024, DR-4828); Hurricane Idalia (declared Aug 31, 2023, DR-4734); Hurricane Nicole (declared Dec 13, 2022, DR-4680). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.
What is the flood risk grade for Nassau County, FL?
Nassau County is graded A (composite score 13/100, low risk). It ranks #767 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 Nassau County?
69 NFIP flood insurance claims have been filed in Nassau County, FL, totaling $1,594,488 in payouts. The average claim is $23,109. Source: FEMA FimaNfipClaims v2 dataset.
Has Nassau County, FL had any recent flood disasters?
Yes. The most recent FEMA declaration affecting Nassau County was Hurricane Milton on Oct 11, 2024 (DR-4834). The county has 21 declared disasters in the OpenFEMA record covering 1973–2024.
For this entity, the underlying data on this page comes from FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims. The breakdown above is the federal record; the paragraphs below add the per-entity context that makes the headline numbers usable for a real decision rather than just a data lookup.
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.