Delaware wildfire risk
Sussex County has the highest wildfire risk in Delaware, scoring 84.8 out of 100 — rated "Relatively Low" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Sussex County | 84.8 | Relatively Low | 0 |
| 2 | Kent County | 64.9 | Relatively Low | 0 |
| 3 | New Castle County | 60.6 | Very Low | 0 |
Source: FEMA National Risk Index v1.20.0, December 2025. Scores are 0–100 percentile rankings among all US counties. See the methodology page for definitions. Download the full CSV for all counties.
Wildfire risk nationally:
Other hazard risks in Delaware:
Frequently asked questions
What is the highest wildfire risk county in Delaware?
Sussex County, DE has the highest wildfire risk in Delaware, with a FEMA National Risk Index score of 84.8 out of 100 (rated "Relatively Low").
What causes wildfire risk in Delaware?
Wildfire risk reflects expected annual losses to buildings, population, and agriculture from wildfire, adjusted for social vulnerability and community resilience. High scores cluster in the western US, where dry climate, fuel loads, and seasonal wind patterns combine with rapid suburban development into fire-prone terrain.