Which county in Ohio has the highest natural disaster risk?

Franklin County has the highest natural disaster risk score in Ohio at 98.1 (Relatively High), based on FEMA National Risk Index data.

Which county in Ohio is the safest from natural disasters?

Harrison County has the lowest natural disaster risk score in Ohio at 11.4 (Very Low), based on FEMA NRI data.

What natural disasters are most common in Ohio?

Ohio counties face varying levels of risk from floods, wildfires, tornadoes, earthquakes, and hurricanes. The FEMA National Risk Index scores each county across 18 hazard types. See individual county pages for detailed hazard breakdowns.

How is natural disaster risk measured by county?

The FEMA National Risk Index (NRI) measures natural disaster risk using expected annual loss, social vulnerability, and community resilience. Scores are normalized nationally, with ratings from Very Low to Very High across 18 natural hazard types.

Ohio Disaster Risk

Natural disaster risk data for all 88 counties.

Avg Risk Score

55.0

Risk Rating

Relatively High

Counties with Data

of 88 total

Highest Risk Counties

Franklin County

98.1

Relatively High

Cuyahoga County

98.0

Relatively High

Hamilton County

96.3

Relatively High

Montgomery County

92.7

Relatively Moderate

Lucas County

92.4

Relatively Moderate

Lowest Risk Counties

Harrison County

11.4

Very Low

Vinton County

11.8

Very Low

Noble County

13.5

Very Low

Wyandot County

17.4

Very Low

Morgan County

18.2

Very Low

All Ohio Counties

County	Risk Score	Rating	Flood	Wildfire	Tornado	Earthquake
Franklin County	98.1	Relatively High	98.8	29.1	98.4	93.3
Cuyahoga County	98.0	Relatively High	98.7	56.9	99.0	89.6
Hamilton County	96.3	Relatively High	96.9	47.3	99.4	92.7
Montgomery County	92.7	Relatively Moderate	95.5	44.1	92.6	91.1
Lucas County	92.4	Relatively Moderate	95.4	36.5	97.3	88.1
Butler County	91.5	Relatively Moderate	93.0	41.2	98.0	85.3
Summit County	91.2	Relatively Moderate	94.0	53.2	91.1	78.3
Stark County	87.9	Relatively Moderate	91.7	49.0	87.7	78.8
Lorain County	86.3	Relatively Moderate	90.2	45.9	90.9	74.6
Trumbull County	84.5	Relatively Moderate	88.8	43.7	90.8	69.2
Mahoning County	83.6	Relatively Moderate	88.1	48.6	91.2	73.3
Licking County	78.9	Relatively Low	86.0	42.5	61.5	65.9
Delaware County	78.8	Relatively Low	86.4	26.7	81.5	66.2
Clermont County	77.9	Relatively Low	81.3	41.4	83.6	78.4
Warren County	77.8	Relatively Low	83.9	37.7	83.4	75.5
Lake County	77.4	Relatively Low	86.1	28.9	75.2	60.9
Clark County	77.1	Relatively Low	84.2	25.0	82.3	78.8
Greene County	75.7	Relatively Low	75.4	30.8	81.3	80.3
Belmont County	75.2	Relatively Low	87.0	40.7	55.5	41.3
Allen County	73.3	Relatively Low	83.0	9.4	74.3	83.2
Fairfield County	72.6	Relatively Low	81.8	26.3	71.6	57.2
Lawrence County	71.0	Relatively Low	83.7	53.2	48.3	48.7
Muskingum County	70.9	Relatively Low	83.8	33.6	56.3	51.8
Scioto County	70.2	Relatively Low	82.0	34.2	45.0	62.6
Columbiana County	69.1	Relatively Low	82.2	46.8	70.0	42.5
Tuscarawas County	69.0	Relatively Low	82.3	38.3	46.6	54.9
Medina County	69.0	Relatively Low	75.5	46.6	84.6	47.6
Athens County	68.7	Relatively Low	83.7	13.4	37.4	48.8
Jefferson County	66.7	Relatively Low	81.6	40.5	50.2	46.3
Wood County	65.7	Relatively Low	75.7	13.5	80.5	69.8
Portage County	65.1	Relatively Low	75.3	39.2	70.5	53.3
Wayne County	64.9	Relatively Low	71.9	38.8	76.1	56.5
Washington County	64.4	Relatively Low	80.5	22.6	33.1	47.1
Ross County	62.9	Relatively Low	74.5	48.5	56.3	53.8
Ashtabula County	62.6	Relatively Low	72.6	36.1	78.8	54.7
Brown County	62.6	Relatively Low	75.0	60.7	57.5	65.8
Miami County	61.4	Relatively Low	70.1	21.0	75.4	80.4
Erie County	61.4	Relatively Low	71.8	23.0	77.9	62.1
Richland County	61.3	Relatively Low	71.6	35.6	62.3	56.2
Marion County	61.1	Relatively Low	64.9	3.7	62.9	69.1
Knox County	61.0	Relatively Low	72.0	36.2	64.3	48.5
Holmes County	60.4	Relatively Low	71.2	46.9	66.7	41.9
Geauga County	60.3	Relatively Low	73.3	42.3	59.6	46.2
Ottawa County	59.2	Relatively Low	72.6	14.0	72.8	52.9
Sandusky County	56.7	Relatively Low	67.7	6.4	71.4	62.2
Shelby County	56.2	Relatively Low	63.3	10.3	68.5	86.5
Hancock County	54.1	Relatively Low	65.4	1.9	67.3	60.6
Logan County	53.2	Relatively Low	67.7	6.7	61.2	69.2
Meigs County	53.0	Relatively Low	72.7	8.4	25.5	40.2
Darke County	52.7	Relatively Low	60.1	12.3	81.8	80.1
Pickaway County	50.9	Relatively Low	66.0	18.6	52.9	54.0
Huron County	50.3	Relatively Low	60.5	15.7	67.3	52.6
Coshocton County	49.1	Relatively Low	66.8	29.9	46.8	32.1
Gallia County	48.3	Relatively Low	67.6	34.8	26.1	43.3
Hocking County	47.3	Relatively Low	68.8	12.7	33.8	34.6
Seneca County	46.9	Relatively Low	61.2	2.8	58.0	57.1
Ashland County	46.3	Relatively Low	60.2	30.0	57.3	43.9
Williams County	44.4	Relatively Low	51.8	12.1	74.4	63.0
Adams County	43.8	Relatively Low	64.3	63.0	41.2	49.4
Preble County	43.3	Relatively Low	51.4	13.6	76.7	63.2
Highland County	43.2	Relatively Low	56.6	60.3	56.2	62.0
Pike County	43.1	Relatively Low	63.9	24.2	37.4	43.3
Defiance County	41.9	Very Low	59.4	6.9	63.7	52.6
Auglaize County	41.8	Very Low	55.5	5.2	58.0	77.2
Guernsey County	37.5	Very Low	58.9	31.1	36.8	38.5
Jackson County	35.8	Very Low	57.2	20.4	33.9	45.5
Crawford County	35.2	Very Low	51.9	3.1	42.0	52.0
Clinton County	34.0	Very Low	44.7	8.9	55.5	65.4
Henry County	33.8	Very Low	55.1	3.5	48.5	53.0
Fulton County	33.6	Very Low	41.7	8.1	66.9	58.7
Putnam County	32.9	Very Low	52.8	2.3	48.5	53.6
Union County	32.7	Very Low	52.7	4.1	49.5	48.6
Mercer County	31.6	Very Low	42.1	6.5	67.0	73.8
Monroe County	27.3	Very Low	50.9	18.3	23.9	33.0
Champaign County	26.7	Very Low	43.8	3.4	46.4	56.2
Perry County	26.0	Very Low	47.0	18.4	32.4	36.2
Fayette County	25.9	Very Low	42.5	5.1	43.3	57.7
Madison County	24.9	Very Low	41.5	2.9	43.9	55.6
Hardin County	24.4	Very Low	40.2	1.3	36.3	48.9
Morrow County	24.4	Very Low	45.0	16.4	40.6	39.9
Paulding County	21.2	Very Low	39.2	4.4	51.2	50.3
Van Wert County	20.1	Very Low	33.7	3.4	48.2	57.0
Carroll County	19.9	Very Low	42.8	24.7	28.0	27.0
Morgan County	18.2	Very Low	45.3	11.2	17.0	24.7
Wyandot County	17.4	Very Low	30.5	1.0	40.5	45.5
Noble County	13.5	Very Low	35.8	22.6	24.7	28.7
Vinton County	11.8	Very Low	34.6	4.0	21.3	28.1
Harrison County	11.4	Very Low	27.3	17.0	18.2	23.8

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