Earthquake Risk in Delaware
All Delaware counties ranked by FEMA National Risk Index earthquake score
Earthquake risk — ground shaking from sudden movement along geologic faults — is rated for 3 of 3 Delaware counties in FEMA's National Risk Index. New Castle County carries the state's highest earthquake score at 92.9, with $9M in expected annual earthquake losses.
No Delaware county reaches the High band for earthquake, and expected annual losses from earthquake total roughly $13M statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Earthquake
| # | County | Earthquake Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | New Castle County | Medium | 0.00 / yr | $9M | |
| 2 | Sussex County | Low | 0.00 / yr | $2M | |
| 3 | Kent County | Low | 0.00 / yr | $2M |
3 Delaware counties with measurable earthquake risk. See the national earthquake ranking or all Delaware counties by overall risk.
Frequently Asked Questions
Which Delaware county has the highest earthquake risk?
New Castle County has the highest FEMA earthquake risk score in Delaware at 92.9 (Medium), with $9M in expected annual losses and about 0.00 events per year.
How many Delaware counties face significant earthquake risk?
3 Delaware counties record measurable earthquake risk in FEMA's National Risk Index; 0 of them are rated High or Very High.