Delaware Natural Disaster Risk by County
FEMA National Risk Index rankings for all 3 counties
Delaware spans 3 counties with an average FEMA National Risk Index score of 91.3 (high risk) and roughly $377M in combined expected annual loss statewide. 1 county is rated High or Very High risk.
Topping the rankings is New Castle County (score 95.3, high), while Kent County (score 84.5) carries the lowest. Use the table below to compare every county by score, top hazard, and expected annual loss.
County Rankings
| # | County | Risk Score | Risk Rating | Top Hazard | Ann. Loss |
|---|---|---|---|---|---|
| 1 | New Castle County | High | Winter Weather | $202M | |
| 2 | Sussex County | Medium | Cold Wave | $119M | |
| 3 | Kent County | Medium | Cold Wave | $56M |
All 3 Delaware counties, ranked by FEMA National Risk Index score.
Frequently Asked Questions
Which Delaware county has the highest natural disaster risk?
New Castle County has the highest FEMA National Risk Index score in Delaware at 95.3 (High), driven largely by winter weather.
What is the average natural disaster risk in Delaware?
Delaware counties average a National Risk Index score of 91.3 across 3 counties, with 1 rated High or Very High risk.
How much are expected annual losses across Delaware?
FEMA estimates roughly $377M in combined expected annual loss from natural hazards across all Delaware counties.