Polk County, Iowa
Natural Hazard Risk Assessment — Population: 492,316
92.0NRI
Relatively Moderate
Overall Risk Rating
👥
Population
492,316
🏠
Building Value
$105.4B
💰
Annual Hazard Loss
$137.6M
⚠️
Hazards Tracked
14
Natural Hazard Risk Profile
💨
Very HighStrong Wind
Annual Loss$11.5M
Risk Score99.2
🌪️
Relatively HighTornado
Annual Loss$30.9M
Risk Score98.1
🧊
Relatively HighHail
Annual Loss$7.4M
Risk Score97.9
🌡️
Relatively HighHeat Wave
Annual Loss$10.7M
Risk Score96.7
☀️
Relatively HighDrought
Annual Loss$3.1M
Risk Score94.8
🌊
Relatively ModerateRiverine Flooding
Annual Loss$60.6M
Risk Score92.1
❄️
Relatively HighIce Storm
Annual Loss$1.4M
Risk Score91.7
🥶
Relatively HighCold Wave
Annual Loss$9.8M
Risk Score91.3
Show all 14 hazards
⛄
Relatively HighWinter Weather
Annual Loss$506K
Risk Score90.3
⚡
Relatively ModerateLightning
Annual Loss$816K
Risk Score78.1
⛰️
Relatively LowLandslide
Annual Loss$6K
Risk Score68.4
🏔️
Relatively LowEarthquake
Annual Loss$820K
Risk Score66.8
🔥
Very LowWildfire
Annual Loss$91K
Risk Score57.7
🌀
Very LowHurricane
Annual Loss$14K
Risk Score27.5
Polk County vs. National Average
🎯 Overall Risk
92.0+43.3 vs avg
National avg: 48.7
🔥 Wildfire Risk
57.7+9.0 vs avg
National avg: 48.7
👥 Social Vulnerability
17.0-32.2 vs avg
National avg: 49.2
🛡️ Community Resilience
91.2+42.5 vs avg
National avg: 48.7
Community Profile
Social Vulnerability
17.0
Very LowHigher scores indicate greater social vulnerability to natural hazards.
Community Resilience
91.2
Very 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.