riskbycounty
FEMA NRI 1.19.0Updated Nov 2023 · Coverage 2014–2023Methodology

Dillon County Disaster Risk

Dillon County, South Carolina

FEMA Risk Rating

Relatively Moderate

National Percentile

84th

of 3,144 counties

State Rank

#17

of 46 (1 = highest risk)

Flood Risk

62th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Relatively Low

Higher than 62% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Moderate

Higher than 81% of US counties

Tornado

Tornado and severe thunderstorm risk

Relatively Low

Higher than 80% of US counties

Earthquake

Seismic activity and ground shaking risk

Moderate

Higher than 85% of US counties

Hurricane

Tropical cyclone and hurricane risk

Relatively High

Higher than 96% of US counties

Risk Overview

About Natural Disaster Risk in Dillon County, South Carolina

Dillon faces above-average disaster risk

Dillon County scores 84.32 on the composite risk scale, well above the national average and significantly higher than South Carolina's 70.75 state average. This rating places the county in the relatively moderate risk category, meaning residents face meaningful exposure to multiple natural hazards.

Among the riskiest in South Carolina

Dillon ranks as one of South Carolina's highest-risk counties, with its 84.32 composite score placing it firmly in the upper tier of state risk profiles. This elevated standing reflects the county's particular vulnerability to several hazard types that affect the Pee Dee region.

Dillon's risk compared to neighbors

Dillon's 84.32 score exceeds nearby Florence County (89.57) slightly and outpaces Greenwood County (72.74) by a substantial margin. Among its immediate peers, Dillon represents a mid-to-high risk zone that demands serious preparedness.

Hurricanes and earthquakes top Dillon's threats

Hurricane risk reaches 96.33 in Dillon County—nearly the highest in the state—while earthquake risk scores 85.43, reflecting the county's sensitivity to distant seismic and tropical storm activity. Wildfire risk also registers at 81.27, making vegetation management and evacuation readiness essential for rural properties.

Secure comprehensive coverage now

Dillon residents should prioritize flood and wind insurance, as standard homeowners policies exclude both hurricane and flood damage. Given the county's high hurricane risk score of 96.33, supplemental coverage is not optional—it's a practical necessity for protecting your property investment.

Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor

Preparedness Guide

What to Prepare for in Dillon County

Top Hazards by Exposure

  1. #1
    HurricanePrepare
    96th percentile
  2. #2
    EarthquakePrepare
    85th percentile
  3. #3
    WildfirePrepare
    81th percentile

Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)

Risk Advisory: Dillon County

Risk Verdict

Dillon County's overall risk score at the 84th percentile nationally signals meaningful exposure to multiple natural hazard types. Comprehensive household preparedness — including reviewing insurance, maintaining emergency supplies, and knowing evacuation routes — is strongly recommended.

Hazard Breakdown

Hurricane risk is Dillon County's dominant natural hazard, ranked at the 96th percentile nationally under FEMA's National Risk Index. Earthquake ranks second at the 85th percentile nationally. Additional tracked hazards include wildfire (81th percentile), tornado (80th percentile), flood (62th percentile).

Preparedness Context

Dillon County ranks at the 96th percentile nationally for hurricane risk. For coastal counties, wind-resistant shutters or impact-rated windows represent the highest single structural investment for reducing property damage. Earthquake, the county's second-ranked hazard at the 85th percentile nationally, represents an additional preparedness consideration for Dillon County independent of hurricane season. For extended post-storm outages common in Dillon County's hurricane zone, a portable generator (operated outdoors only) and a supply of non-perishable food for at least seven days provides meaningful household resilience.

Regional Context

Compared to other South Carolina counties, Dillon County runs 13.6 composite risk points higher than the state mean — reflecting above-average hazard concentration in this area.

Is your household prepared for Dillon County's hazards?

Review FEMA's county-specific preparedness checklists and emergency planning guides.

FEMA Ready Guide →

Frequently Asked Questions

What is the natural disaster risk in Dillon County, SC?
Dillon County has a FEMA National Risk Index rating of Relatively Moderate, placing it in the 84th percentile nationally out of 3,144 counties. This composite score reflects the county's overall exposure to natural hazards including floods, wildfires, tornadoes, earthquakes, and hurricanes, weighted by expected annual loss and social vulnerability.
What types of natural hazards affect Dillon County?
Dillon County is evaluated for five major natural hazard types: hurricane (96th percentile), earthquake (85th percentile), wildfire (81th percentile), tornado (80th percentile), flooding (62th percentile). The highest-risk hazard is hurricane at the 96th percentile nationally. These scores are derived from FEMA's National Risk Index, which analyzes expected annual loss, social vulnerability, and community resilience for each hazard type.
How does Dillon County risk compare to the South Carolina average?
Dillon County's composite risk percentile is 84th, compared to the South Carolina state average of 71th percentile. The state's overall risk rating is Relatively Low. This means Dillon County faces higher natural disaster risk than the typical county in South Carolina.
Is Dillon County at risk for hurricane?
Yes, Dillon County's hurricane risk is at the 96th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Dillon County is at the 62th percentile.
How is natural disaster risk measured?
FEMA's National Risk Index (NRI) calculates risk scores for 18 natural hazard types across all U.S. counties and census tracts. The composite score combines Expected Annual Loss (estimated dollar losses from each hazard), Social Vulnerability (demographic factors affecting disaster impact), and Community Resilience (ability to recover). Percentile scores rank each county against all 3,144 U.S. counties, and risk ratings range from Very Low to Very High.
Why is Dillon County higher risk than average?
Dillon County's composite risk score of 84th percentile is above the South Carolina state average of 71th percentile. This elevated risk is driven by hurricane exposure (96th percentile), along with earthquake and wildfire and tornado and flooding risk. Geographic location, terrain, climate patterns, and proximity to flood zones or fault lines all influence a county's risk profile.
By Evan Brooks, Data EditorUpdated Reviewed by Evan Brooks, Data Editor

Data Source

Risk data sourced from the FEMA National Risk Index (NRI). Risk scores are relative rankings (0–100) across all US counties — not absolute risk measures. Higher scores indicate higher relative risk compared to other counties.

Disclaimer: This data is informational only. It is not financial, insurance, or legal advice. Always consult a qualified professional before making insurance or real estate decisions.