RelocateMath
Natural disaster risk FEMA county data

Ohio natural disaster risk

Ohio ranks #24 of 51 from the lowest population-weighted county-score mean in our state comparison. Its highest hazard-score means are riverine flooding, ice storm, strong wind.

By Page updated Data: FEMA National Risk Index v1.20 (methodology)

County-score mean
79
High county-score mean
Expected loss per resident
$259
per year, all hazards
Home insurance (median)
$1,198
per year with a mortgage, ACS 2024

RelocateMath computes these state means by weighting FEMA county scores by population. A mean of county percentiles is not a national state percentile or an official FEMA state rating.

Highest county hazard-score means in Ohio
County-score mean above 50
Riverine flooding85
Ice storm84
Strong wind83
Tornado82
Winter weather82
Lightning80

The vertical line marks county-score scale midpoint (50).

Find your county's risk in Ohio

All 88 county rows with a FEMA score are available below, initially ordered by population.

FEMA v1.20 county risk scores in Ohio; population from Census ACS 2020–2024
CountyPopulationRisk scoreFEMA rating
Franklin County1,333,04898.1Relatively High
Cuyahoga County1,245,87398.0Relatively High
Hamilton County830,77496.3Relatively High
Summit County537,86491.2Relatively Moderate
Montgomery County536,09692.7Relatively Moderate
Lucas County428,01892.4Relatively Moderate
Butler County392,87691.5Relatively Moderate
Stark County373,71387.9Relatively Moderate
Lorain County317,12986.3Relatively Moderate
Warren County250,00877.8Relatively Low
Lake County232,21677.4Relatively Low
Delaware County226,83478.8Relatively Low
Mahoning County226,49183.6Relatively Moderate
Clermont County211,18177.9Relatively Low
Trumbull County200,92984.5Relatively Moderate
Medina County183,66069.0Relatively Low
Licking County181,83778.9Relatively Low
Greene County169,68875.7Relatively Low
Fairfield County163,45372.6Relatively Low
Portage County161,95665.1Relatively Low
Clark County135,15877.1Relatively Low
Wood County132,06465.7Relatively Low
Richland County125,09961.3Relatively Low
Wayne County116,58864.9Relatively Low
Miami County110,29661.4Relatively Low
Allen County101,34873.3Relatively Low
Columbiana County100,70469.1Relatively Low
Ashtabula County97,16762.6Relatively Low
Geauga County95,48160.3Relatively Low
Tuscarawas County92,38569.0Relatively Low
Muskingum County86,41170.9Relatively Low
Ross County76,49262.9Relatively Low
Hancock County74,86654.1Relatively Low
Erie County74,58161.4Relatively Low
Scioto County72,62770.2Relatively Low
Union County67,32432.7Very Low
Belmont County65,47375.2Relatively Low
Marion County65,02061.1Relatively Low
Jefferson County64,51866.7Relatively Low
Knox County63,14261.0Relatively Low
Athens County61,73768.7Relatively Low
Pickaway County60,13150.9Relatively Low
Washington County58,97864.4Relatively Low
Sandusky County58,77856.7Relatively Low
Huron County58,31950.3Relatively Low
Lawrence County56,81971.0Relatively Low
Seneca County54,77046.9Relatively Low
Ashland County52,25646.3Relatively Low
Darke County51,59452.7Relatively Low
Shelby County47,92956.2Relatively Low
Auglaize County46,12541.8Very Low
Logan County46,08953.2Relatively Low
Madison County44,42324.9Very Low
Holmes County44,41860.4Relatively Low
Brown County43,84562.6Relatively Low
Highland County43,51743.2Relatively Low
Mercer County42,48431.6Very Low
Fulton County42,24033.6Very Low
Clinton County42,01234.0Very Low
Crawford County41,71135.2Very Low
Preble County40,76543.3Relatively Low
Ottawa County39,99459.2Relatively Low
Champaign County38,80426.7Very Low
Defiance County38,34341.9Very Low
Guernsey County38,22337.5Very Low
Coshocton County36,74449.1Relatively Low
Williams County36,71944.4Relatively Low
Perry County35,53526.0Very Low
Morrow County35,40424.4Very Low
Putnam County34,31432.9Very Low
Jackson County32,65035.8Very Low
Hardin County30,47524.4Very Low
Gallia County29,06848.3Relatively Low
Fayette County28,87625.9Very Low
Van Wert County28,82620.1Very Low
Hocking County27,79947.3Relatively Low
Henry County27,56733.8Very Low
Adams County27,54043.8Relatively Low
Pike County27,04443.1Relatively Low
Carroll County26,65919.9Very Low
Meigs County21,89653.0Relatively Low
Wyandot County21,59817.4Very Low
Paulding County18,79121.2Very Low
Harrison County14,30611.4Very Low
Noble County14,28213.5Very Low
Morgan County13,65118.2Very Low
Monroe County13,22727.3Very Low
Vinton County12,63011.8Very Low

The county rows show FEMA's own county percentile scores and rating categories; the state figures above are our weighted means. County data cannot establish a property's safety. Expected loss is modeled annual loss per resident, not a premium quote. The insurance figure is what owners with a mortgage reported paying in 2024 (Census American Community Survey), not a current quote. For a specific home, check the address on FEMA's flood map and get insurance quotes before you commit. Our guide explains how to check natural disaster risk before you move.

Lowest FEMA county risk scores in Ohio

Cities in Ohio

Frequently asked questions

Is Ohio safe from natural disasters?

Ohio's population-weighted county-score mean is 79 out of 100 (high county-score mean), #24 of 51 from the lowest mean in our state comparison. A state average cannot show whether an individual home is safe. About 29% of residents live in counties FEMA rates relatively high or very high.

What natural disasters happen in Ohio?

The highest population-weighted county hazard-score means in Ohio are riverine flooding, ice storm, strong wind (means 85, 84, 83 on the 0–100 county-score scale). These are not national state percentiles.

Which counties have the lowest modeled risk scores in Ohio?

Among counties with at least 20,000 people, the lowest FEMA county risk scores are in Wyandot County, Carroll County, Van Wert County. Conditions vary within each county; check an individual address separately.