Coastal Flood Risk in Mississippi
All Mississippi counties ranked by FEMA National Risk Index coastal flood score
Coastal Flood risk — seawater inundation from storm surge, high tides, and rising sea levels — is rated for 5 of 82 Mississippi counties in FEMA's National Risk Index. Harrison County carries the state's highest coastal flood score at 91.6, with $6M in expected annual coastal flood losses.
3 Mississippi counties are rated High or Very High for coastal flood, and expected annual losses from coastal flood total roughly $12M statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Coastal Flood
| # | County | Coastal Flood Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Harrison County | High | 6.48 / yr | $6M | |
| 2 | Hancock County | High | 6.08 / yr | $3M | |
| 3 | Jackson County | High | 5.09 / yr | $3M | |
| 4 | Pearl River County | Very Low | 0.01 / yr | $4K | |
| 5 | George County | Very Low | 0.01 / yr | $8 |
5 Mississippi counties with measurable coastal flood risk. See the national coastal flood ranking or all Mississippi counties by overall risk.
Frequently Asked Questions
Which Mississippi county has the highest coastal flood risk?
Harrison County has the highest FEMA coastal flood risk score in Mississippi at 91.6 (High), with $6M in expected annual losses and about 6.48 events per year.
How many Mississippi counties face significant coastal flood risk?
5 Mississippi counties record measurable coastal flood risk in FEMA's National Risk Index; 3 of them are rated High or Very High.