Williamson County, Illinois
Natural Hazard Risk Assessment — Population: 67,101
85.8NRI
Relatively Moderate
Overall Risk Rating
👥
Population
67,101
🏠
Building Value
$16.1B
💰
Annual Hazard Loss
$52.5M
⚠️
Hazards Tracked
14
Natural Hazard Risk Profile
💨
Very HighStrong Wind
Annual Loss$7.5M
Risk Score99.1
🏔️
Relatively ModerateEarthquake
Annual Loss$19.6M
Risk Score96.3
🌡️
Relatively ModerateHeat Wave
Annual Loss$2.9M
Risk Score90.7
⛄
Relatively HighWinter Weather
Annual Loss$364K
Risk Score89.8
🥶
Relatively ModerateCold Wave
Annual Loss$5.0M
Risk Score86.9
❄️
Relatively ModerateIce Storm
Annual Loss$428K
Risk Score81.9
🌪️
Relatively ModerateTornado
Annual Loss$3.6M
Risk Score80.3
⛰️
Relatively LowLandslide
Annual Loss$13K
Risk Score79.3
Show all 14 hazards
🧊
Relatively ModerateHail
Annual Loss$721K
Risk Score78.3
🌊
Relatively LowRiverine Flooding
Annual Loss$11.7M
Risk Score69.9
⚡
Relatively ModerateLightning
Annual Loss$409K
Risk Score67.7
☀️
Relatively LowDrought
Annual Loss$178K
Risk Score54.2
🌀
Very LowHurricane
Annual Loss$39K
Risk Score44.5
🔥
Very LowWildfire
Annual Loss$4K
Risk Score14.2
Williamson County vs. National Average
🎯 Overall Risk
85.8+37.1 vs avg
National avg: 48.7
🔥 Wildfire Risk
14.2-34.5 vs avg
National avg: 48.7
👥 Social Vulnerability
55.4+6.2 vs avg
National avg: 49.2
🛡️ Community Resilience
78.2+29.5 vs avg
National avg: 48.7
Community Profile
Social Vulnerability
55.4
Relatively ModerateHigher scores indicate greater social vulnerability to natural hazards.
Community Resilience
78.2
Relatively HighHigher scores indicate better ability to prepare for, adapt to, and recover from hazards.
Frequently Asked Questions
Data from FEMA National Risk Index. For informational purposes only. Consult local authorities for property-specific risk.