riskbycounty
FEMA NRI 1.19.0Updated Nov 2023 · Coverage 2014–2023Methodology

Ross County Disaster Risk

Ross County, Ohio

FEMA Risk Rating

Relatively Low

National Percentile

63th

of 3,144 counties

State Rank

#34

of 88 (1 = highest risk)

Flood Risk

74th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Relatively Low

Higher than 74% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Relatively Low

Higher than 49% of US counties

Tornado

Tornado and severe thunderstorm risk

Relatively Low

Higher than 56% of US counties

Earthquake

Seismic activity and ground shaking risk

Relatively Low

Higher than 54% of US counties

Hurricane

Tropical cyclone and hurricane risk

Very Low

Higher than 36% of US counties

Risk Overview

About Natural Disaster Risk in Ross County, Ohio

Ross faces elevated national risk

Ross County's composite risk score of 62.88 significantly exceeds the national average, indicating above-average natural disaster exposure. The county experiences more hazard threats than most American regions.

Among Ohio's riskier counties

At 62.88, Ross County exceeds Ohio's state average of 55.03 by nearly 8 points, ranking in the state's higher-risk tier. The county faces notably elevated exposure across multiple hazard types.

Ross ranks among region's riskiest

Ross (62.88) significantly exceeds nearby Pike (43.13) and Pickaway (50.92) but trails Portage (65.08) in southern Ohio. Its risk profile places it among the region's more hazardous counties.

Floods and wildfires are serious threats

Ross County's flood risk of 74.46 ranks among Ohio's worst, while wildfire risk at 48.54 significantly exceeds state patterns. These two hazards drive Ross's elevated composite risk significantly above state averages.

Flood insurance is essential coverage

With flood risk at 74.46, dedicated flood insurance is critical—standard homeowners policies exclude water damage entirely. Clear debris from wooded areas near your property, maintain gutters, and verify your insurance covers wildfire damage to structures and contents.

Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor

Preparedness Guide

What to Prepare for in Ross County

Top Hazards by Exposure

  1. #1
    FloodPrepare
    74th percentile
  2. #2
    TornadoPrepare
    56th percentile
  3. #3
    EarthquakePrepare
    54th percentile

Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)

Risk Advisory: Ross County

Risk Verdict

Ross County's FEMA risk score places it at the 63th percentile nationally, indicating lower-than-typical exposure for a U.S. county. A moderate composite score often means one or two hazard categories are doing the heavy lifting — knowing which ones matters for preparation.

Hazard Breakdown

Flood risk is Ross County's dominant natural hazard, ranked at the 74th percentile nationally under FEMA's National Risk Index. Tornado ranks second at the 56th percentile nationally. Additional tracked hazards include earthquake (54th percentile), wildfire (49th percentile), hurricane (36th percentile).

Preparedness Context

At the 74th percentile nationally for flood risk, Ross County residents benefit from understanding their specific flood zone status. Even one inch of floodwater causes significant structural damage to properties outside officially designated high-risk zones. Alongside flooding, tornado exposure at the 56th percentile means households benefit from a multi-hazard preparedness plan rather than focusing on flood alone. A tested family preparedness plan specific to Ross County's primary hazards — including how to shelter in place or evacuate, and who to call — provides more real protection than a general emergency kit sitting unused on a shelf.

Regional Context

The Ohio county average is 7.9 composite points below Ross County's score, a gap that reflects the county's elevated position in the state's hazard distribution.

Is your household prepared for Ross County's hazards?

Review FEMA's county-specific preparedness checklists and emergency planning guides.

FEMA Ready Guide →

Frequently Asked Questions

What is the natural disaster risk in Ross County, OH?
Ross County has a FEMA National Risk Index rating of Relatively Low, placing it in the 63th 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 Ross County?
Ross County is evaluated for five major natural hazard types: flooding (74th percentile), tornado (56th percentile), earthquake (54th percentile), wildfire (49th percentile), hurricane (36th percentile). The highest-risk hazard is flooding at the 74th 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 Ross County risk compare to the Ohio average?
Ross County's composite risk percentile is 63th, compared to the Ohio state average of 55th percentile. The state's overall risk rating is Relatively Low. This means Ross County faces higher natural disaster risk than the typical county in Ohio.
Is Ross County at risk for flooding?
Yes, Ross County's flooding risk is at the 74th percentile nationally. This is above the national median.
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.
Why is Ross County higher risk than average?
Ross County's composite risk score of 63th percentile is above the Ohio state average of 55th percentile. This elevated risk is driven by flooding exposure (74th percentile), along with tornado and earthquake risk. Geographic location, terrain, climate patterns, and proximity to flood zones or fault lines all influence a county's risk profile.
By Evan Brooks, Data EditorUpdated Reviewed by Evan Brooks, 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.