Shelby County Disaster Risk
Shelby County, Illinois
FEMA Risk Rating
Relatively Low
National Percentile
52th
of 3,144 counties
State Rank
#56
of 102 (1 = highest risk)
Flood Risk
48th
percentile
Hazard Risk Breakdown
Flood
River, coastal, and surface flooding risk
Relatively Low
Higher than 48% of US counties
Wildfire
Wildland and wildland-urban interface fire risk
Very Low
Higher than 13% of US counties
Tornado
Tornado and severe thunderstorm risk
Very Low
Higher than 40% of US counties
Earthquake
Seismic activity and ground shaking risk
Relatively Low
Higher than 79% of US counties
Hurricane
Tropical cyclone and hurricane risk
Very Low
Higher than 41% of US counties
Risk Overview
About Natural Disaster Risk in Shelby County, Illinois
Shelby maintains relatively low risk
Shelby County scores 51.75 on the composite risk scale, earning a Relatively Low rating and sitting just below Illinois's state average of 54.46. The county experiences moderate exposure to several hazard types, particularly earthquakes and flooding, requiring basic disaster preparedness.
Below-average risk statewide
Shelby ranks in the safer half of Illinois counties, with its 51.75 score beating approximately 50% of the state's peers. The county avoids the extreme risk profiles seen in St. Clair and Sangamon counties while maintaining vigilance across multiple hazard types.
Safer than Sangamon region
Shelby's 51.75 score is substantially lower than nearby Sangamon County (91.70), placing it in a much safer risk category for central Illinois. The county represents a middle ground between the very-low-risk northwest counties and the higher-risk south-central and southwestern regions.
Earthquakes and floods are primary concerns
Shelby's earthquake risk of 78.66 is notably elevated, while flood risk at 48.35 represents the second-largest threat in the county. Tornado risk of 39.76 remains moderate, while wildfire and hurricane risks are minimal below 13 and 41 respectively.
Address flood and earthquake coverage
Shelby County residents should obtain flood insurance through the NFIP, particularly if located in mapped flood zones or near drainages. Consider earthquake insurance given the elevated seismic risk, and maintain basic tornado preparedness including a safe room and emergency supply kit.
Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor
Preparedness Guide
What to Prepare for in Shelby County
Top Hazards by Exposure
Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)
Risk Advisory: Shelby County
Risk Verdict
Shelby County ranks at the 52th percentile nationally for natural disaster risk — below the median for U.S. counties. Residents are encouraged to understand which hazards dominate locally and tailor their preparedness accordingly.
Hazard Breakdown
Earthquake risk is Shelby County's dominant natural hazard, ranked at the 79th percentile nationally under FEMA's National Risk Index. Flood ranks second at the 48th percentile nationally. Additional tracked hazards include hurricane (41th percentile), tornado (40th percentile), wildfire (13th percentile).
Preparedness Context
Shelby County ranks at the 79th percentile nationally for earthquake risk. Unlike most natural hazards, earthquakes provide no advance warning; preparedness here means structural adjustments and a practiced response, not alert monitoring. The county's flood risk at the 48th percentile nationally is a seasonal consideration alongside the year-round earthquake threat, requiring awareness of both hazard types. For earthquake preparedness, Shelby County's county emergency management office often maintains a list of community water supply points, Red Cross shelter locations, and post-quake assistance programs — useful resources to identify before an event occurs.
Regional Context
The county's composite score diverges by only 2.7 points from the Illinois average, making Shelby County's hazard profile broadly typical for this part of the state.
Is your household prepared for Shelby County's hazards?
Review FEMA's county-specific preparedness checklists and emergency planning guides.
Frequently Asked Questions
What is the natural disaster risk in Shelby County, IL?
What types of natural hazards affect Shelby County?
How does Shelby County risk compare to the Illinois average?
Is Shelby County at risk for earthquake?
How is natural disaster risk measured?
Is Shelby County a safe place to live?
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.