riskbycounty
FEMA National Risk Index

De Witt County Disaster Risk

De Witt County, Illinois

FEMA Risk Rating

Very Low

National Percentile

29th

of 3,144 counties

State Rank

#81

of 102 (1 = highest risk)

Flood Risk

30th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Very Low

Higher than 30% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Very Low

Higher than 2% of US counties

Tornado

Tornado and severe thunderstorm risk

Relatively Low

Higher than 44% of US counties

Earthquake

Seismic activity and ground shaking risk

Relatively Low

Higher than 66% of US counties

Hurricane

Tropical cyclone and hurricane risk

Very Low

Higher than 19% of US counties

Risk Advisory: De Witt County

Risk Verdict

De Witt County has a very low overall disaster risk profile, scoring in the 29th percentile nationally. This county is among the safer counties in the United States from a natural disaster perspective, though no area is entirely risk-free.

Hazard Breakdown

Earthquake risk is the dominant hazard for De Witt County, scoring in the 66th percentile nationally. It is followed by tornado risk at the 44th percentile. Additional hazards include flood (30th), hurricane (19th), wildfire (2th).

Preparedness Context

With earthquake risk as the top concern, De Witt County residents should secure heavy furniture and appliances, know how to shut off utilities, and keep emergency supplies accessible. Secondary risks such as tornado also warrant attention in household and community preparedness planning. FEMA recommends all households maintain at least 72 hours of food, water, and medication supplies regardless of specific hazard exposure.

Regional Context

De Witt County is notably safer than the average county in Illinois. Its composite risk score is 25.2 points lower than the state average, indicating below-average exposure to natural hazards relative to other counties in the state.

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Frequently Asked Questions

What is the natural disaster risk in De Witt County, IL?
De Witt County has a FEMA National Risk Index rating of Very Low, placing it in the 29th 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 De Witt County?
De Witt County is evaluated for five major natural hazard types: earthquake (66th percentile), tornado (44th percentile), flooding (30th percentile), hurricane (19th percentile), wildfire (2th percentile). The highest-risk hazard is earthquake at the 66th 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 De Witt County risk compare to the Illinois average?
De Witt County's composite risk percentile is 29th, compared to the Illinois state average of 55th percentile. The state's overall risk rating is Relatively Low. This means De Witt County faces lower natural disaster risk than the typical county in Illinois.
Is De Witt County at risk for earthquake?
Yes, De Witt County's earthquake risk is at the 66th percentile nationally. This is above the national median. For flooding specifically, De Witt County is at the 30th 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.
Is De Witt County a safe place to live?
De Witt County's composite risk score of 29th percentile is below the Illinois state average of 55th percentile, indicating relatively lower exposure to natural hazards. However, no county is completely risk-free. The primary hazard type is earthquake at the 66th percentile. Residents should still maintain emergency preparedness plans and appropriate insurance coverage.

Counties with Similar Risk

Menard County

Illinois

-0.6

Very Low

29th percentile

Pike County

Illinois

+1.1

Very Low

30th percentile

Hamilton County

Illinois

+1.6

Very Low

31th percentile

By Logan Johnson, Founder & Data EditorUpdated Reviewed by Logan Johnson, Founder & 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.

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