Natural Hazard Risk in South Carolina
The risk score (0–100) combines expected annual loss from 18 natural hazards with social vulnerability and community resilience. Higher = greater relative risk. Scores compare counties across the United States.
See what's happening right now on the live map →| County | Risk score | Rating | Expected annual loss | Population |
|---|---|---|---|---|
| Charleston | 98.6 | Relatively High | $499.8M | 407,722 |
| Horry | 98.2 | Relatively High | $290.4M | 348,574 |
| Beaufort | 97.1 | Relatively High | $255.6M | 186,606 |
| Berkeley | 94.8 | Relatively High | $213.5M | 229,449 |
| Greenville | 94 | Relatively Moderate | $169M | 525,347 |
| Dorchester | 93.7 | Relatively Moderate | $175.8M | 161,445 |
| Richland | 93.1 | Relatively Moderate | $137.8M | 415,644 |
| Georgetown | 92.5 | Relatively Moderate | $90.2M | 63,262 |
| Lexington | 90.9 | Relatively Moderate | $108.2M | 293,888 |
| Spartanburg | 90.6 | Relatively Moderate | $89.3M | 327,446 |
| Florence | 89.6 | Relatively Moderate | $65.2M | 136,859 |
| York | 88.7 | Relatively Moderate | $99.2M | 281,543 |
| Orangeburg | 87.7 | Relatively Moderate | $44.3M | 84,183 |
| Anderson | 87.2 | Relatively Moderate | $67.3M | 203,620 |
| Oconee | 85.6 | Relatively Moderate | $45.1M | 78,560 |
| Colleton | 85.5 | Relatively Moderate | $37.8M | 38,512 |
| Dillon | 84.3 | Relatively Moderate | $35M | 28,257 |
| Aiken | 84.2 | Relatively Moderate | $47.5M | 168,745 |
| Williamsburg | 82.1 | Relatively Moderate | $30.2M | 30,987 |
| Sumter | 81.7 | Relatively Moderate | $40.7M | 105,493 |
| Marion | 80.7 | Relatively Low | $27.1M | 29,137 |
| Lancaster | 79.4 | Relatively Low | $40.1M | 95,804 |
| Jasper | 78.6 | Relatively Low | $28.8M | 28,355 |
| Pickens | 77.6 | Relatively Low | $37.1M | 131,341 |
| Clarendon | 76.5 | Relatively Low | $23.4M | 31,118 |
| Laurens | 76.2 | Relatively Low | $27.1M | 67,470 |
| Chesterfield | 74 | Relatively Low | $22.5M | 43,159 |
| Greenwood | 72.7 | Relatively Low | $27.3M | 69,326 |
| Darlington | 72.3 | Relatively Low | $22.4M | 62,874 |
| Cherokee | 69.7 | Relatively Low | $23.4M | 56,186 |
| Kershaw | 66.7 | Relatively Low | $23.5M | 65,395 |
| Hampton | 64.8 | Relatively Low | $15.1M | 18,531 |
| Newberry | 62 | Relatively Low | $17.3M | 37,683 |
| Union | 58.2 | Relatively Low | $12.5M | 27,226 |
| Marlboro | 57.5 | Relatively Low | $11.4M | 26,656 |
| Bamberg | 46.5 | Relatively Low | $9.3M | 13,290 |
| Barnwell | 45.8 | Relatively Low | $8.4M | 20,573 |
| Abbeville | 45.4 | Relatively Low | $10.3M | 24,291 |
| Chester | 43.2 | Relatively Low | $10.8M | 32,263 |
| Fairfield | 40.8 | Very Low | $8.5M | 20,909 |
| Saluda | 40.1 | Very Low | $8.2M | 18,852 |
| Lee | 36 | Very Low | $7.6M | 16,515 |
| Allendale | 35.5 | Very Low | $7.1M | 8,033 |
| Calhoun | 22.6 | Very Low | $6.1M | 14,114 |
| Edgefield | 22 | Very Low | $6.8M | 25,644 |
| McCormick | 9.5 | Very Low | $2.8M | 9,500 |
🏛️ Federal disaster declarations (last 2 years)
Winter Storm · Designated areas: Greenville (County), Oconee (County), Pickens (County)
Winter Storm · Designated areas: Fairfield (County), Richland (County), Charleston (County), Orangeburg (County), Calhoun (County), Laurens (County), Jasper (County), Clarendon (County), Edgefield (County), Pickens (County), Cherokee (County), Union (County)…
Fire · Designated areas: Pickens (County)
Fire · Designated areas: Greenville (County), Pickens (County)
Fire · Designated areas: Horry (County)
Flood · Designated areas: Orangeburg (County), Calhoun (County), Bamberg (County)
Major disaster (DR) and emergency (EM) declarations unlock federal assistance for the designated areas. Source: FEMA / OpenFEMA.
Other states
Data: FEMA National Risk Index (updated ~annually). AlertAtlas is not an official warning service — always follow local authorities.