Franklin County Disaster Risk
Franklin County, Ohio
FEMA Risk Rating
Relatively High
National Percentile
98th
of 3,144 counties
State Rank
#1
of 88 (1 = highest risk)
Flood Risk
99th
percentile
Hazard Risk Breakdown
Flood
River, coastal, and surface flooding risk
Relatively High
Higher than 99% of US counties
Wildfire
Wildland and wildland-urban interface fire risk
Very Low
Higher than 29% of US counties
Tornado
Tornado and severe thunderstorm risk
Relatively High
Higher than 98% of US counties
Earthquake
Seismic activity and ground shaking risk
Moderate
Higher than 93% of US counties
Hurricane
Tropical cyclone and hurricane risk
Relatively Low
Higher than 50% of US counties
Risk Overview
About Natural Disaster Risk in Franklin County, Ohio
Franklin County faces elevated disaster risk
Franklin County scores 98.06 on the national composite risk scale, placing it well above the typical U.S. county profile. This relatively high rating means residents face meaningful exposure to multiple hazard types, from flooding to tornadoes, compared to most American counties.
Most at-risk county in Ohio
Franklin County's composite risk score of 98.06 far exceeds Ohio's state average of 55.03, making it the highest-risk county in the state. This significantly elevated profile reflects concentrated vulnerability across several major hazard categories.
Substantially riskier than surrounding counties
Franklin County's score of 98.06 dwarfs neighboring Delaware County and surrounding areas, which typically score in the 40–70 range. The county's central location and urban density amplify its exposure to flood, earthquake, and tornado risks compared to less populated Ohio neighbors.
Flooding and tornadoes pose greatest threats
Franklin County faces a flood risk score of 98.79 and tornado risk of 98.44—among the highest in the nation. Earthquake risk also registers significantly at 93.32, making structural resilience and emergency preparedness critical for residents and businesses.
Comprehensive coverage essential for Franklin residents
Standard homeowners insurance does not cover flood or earthquake damage; Franklin County residents should strongly consider separate flood and earthquake policies given the county's exceptional exposure to both hazards. Ensuring your home meets current building codes and maintaining an emergency preparedness plan can significantly reduce losses from tornadoes and severe weather.
Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor
Preparedness Guide
What to Prepare for in Franklin County
Top Hazards by Exposure
Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)
Risk Advisory: Franklin County
Risk Verdict
FEMA's National Risk Index places Franklin County at the 98th percentile nationally — in the high-risk bracket for U.S. counties. Residents should prioritize a formal household emergency plan, including evacuation routes, insurance review, and a well-stocked emergency kit.
Hazard Breakdown
Flood risk is Franklin County's dominant natural hazard, ranked at the 99th percentile nationally under FEMA's National Risk Index. Tornado ranks second at the 98th percentile nationally. Additional tracked hazards include earthquake (93th percentile), hurricane (50th percentile), wildfire (29th percentile).
Preparedness Context
Flood risk is Franklin County's top hazard at the 99th percentile nationally. Households in or near designated flood zones face elevated financial exposure; flood insurance typically requires a 30-day waiting period before it takes effect, so applying before the season is advisable. The county's second-ranked hazard, tornado at the 98th percentile nationally, means Franklin County residents face compounding risks from multiple natural hazard types during peak seasons. Households across Franklin County should identify the nearest community shelter and keep a basic emergency kit — water, non-perishable food, medications, flashlight, and battery radio — in a location easy to grab quickly.
Regional Context
Franklin County is 43.0 composite risk points above the Ohio average, indicating that residents face greater natural hazard exposure than most of their in-state neighbors.
Is your household prepared for Franklin County's hazards?
Review FEMA's county-specific preparedness checklists and emergency planning guides.
Frequently Asked Questions
What is the natural disaster risk in Franklin County, OH?
What types of natural hazards affect Franklin County?
How does Franklin County risk compare to the Ohio average?
Is Franklin County at risk for flooding?
How is natural disaster risk measured?
Why is Franklin County higher risk than average?
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.