Ohio Disaster Risk

Natural disaster risk data for all 88 counties.

Avg FEMA Rating

Relatively Low

Avg Percentile

55th

Counties with Data

of 88 total

Highest Risk Counties

Franklin County

Relatively High

98th percentile

Cuyahoga County

Relatively High

98th percentile

Hamilton County

Relatively High

96th percentile

Montgomery County

Relatively Moderate

93th percentile

Lucas County

Relatively Moderate

92th percentile

Lowest Risk Counties

Harrison County

Very Low

11th percentile

Vinton County

Very Low

12th percentile

Noble County

Very Low

13th percentile

Wyandot County

Very Low

17th percentile

Morgan County

Very Low

18th percentile

All Ohio Counties

County	Percentile	FEMA Rating	Flood	Wildfire	Tornado	Earthquake
Franklin County	98th	Relatively High	98.8	29.1	98.4	93.3
Cuyahoga County	98th	Relatively High	98.7	56.9	99.0	89.6
Hamilton County	96th	Relatively High	96.9	47.3	99.4	92.7
Montgomery County	93th	Relatively Moderate	95.5	44.1	92.6	91.1
Lucas County	92th	Relatively Moderate	95.4	36.5	97.3	88.1
Butler County	91th	Relatively Moderate	93.0	41.2	98.0	85.3
Summit County	91th	Relatively Moderate	94.0	53.2	91.1	78.3
Stark County	88th	Relatively Moderate	91.7	49.0	87.7	78.8
Lorain County	86th	Relatively Moderate	90.2	45.9	90.9	74.6
Trumbull County	84th	Relatively Moderate	88.8	43.7	90.8	69.2
Mahoning County	84th	Relatively Moderate	88.1	48.6	91.2	73.3
Licking County	79th	Relatively Low	86.0	42.5	61.5	65.9
Delaware County	79th	Relatively Low	86.4	26.7	81.5	66.2
Clermont County	78th	Relatively Low	81.3	41.4	83.6	78.4
Warren County	78th	Relatively Low	83.9	37.7	83.4	75.5
Lake County	77th	Relatively Low	86.1	28.9	75.2	60.9
Clark County	77th	Relatively Low	84.2	25.0	82.3	78.8
Greene County	76th	Relatively Low	75.4	30.8	81.3	80.3
Belmont County	75th	Relatively Low	87.0	40.7	55.5	41.3
Allen County	73th	Relatively Low	83.0	9.4	74.3	83.2
Fairfield County	73th	Relatively Low	81.8	26.3	71.6	57.2
Lawrence County	71th	Relatively Low	83.7	53.2	48.3	48.7
Muskingum County	71th	Relatively Low	83.8	33.6	56.3	51.8
Scioto County	70th	Relatively Low	82.0	34.2	45.0	62.6
Columbiana County	69th	Relatively Low	82.2	46.8	70.0	42.5
Tuscarawas County	69th	Relatively Low	82.3	38.3	46.6	54.9
Medina County	69th	Relatively Low	75.5	46.6	84.6	47.6
Athens County	69th	Relatively Low	83.7	13.4	37.4	48.8
Jefferson County	67th	Relatively Low	81.6	40.5	50.2	46.3
Wood County	66th	Relatively Low	75.7	13.5	80.5	69.8
Portage County	65th	Relatively Low	75.3	39.2	70.5	53.3
Wayne County	65th	Relatively Low	71.9	38.8	76.1	56.5
Washington County	64th	Relatively Low	80.5	22.6	33.1	47.1
Ross County	63th	Relatively Low	74.5	48.5	56.3	53.8
Ashtabula County	63th	Relatively Low	72.6	36.1	78.8	54.7
Brown County	63th	Relatively Low	75.0	60.7	57.5	65.8
Miami County	61th	Relatively Low	70.1	21.0	75.4	80.4
Erie County	61th	Relatively Low	71.8	23.0	77.9	62.1
Richland County	61th	Relatively Low	71.6	35.6	62.3	56.2
Marion County	61th	Relatively Low	64.9	3.7	62.9	69.1
Knox County	61th	Relatively Low	72.0	36.2	64.3	48.5
Holmes County	60th	Relatively Low	71.2	46.9	66.7	41.9
Geauga County	60th	Relatively Low	73.3	42.3	59.6	46.2
Ottawa County	59th	Relatively Low	72.6	14.0	72.8	52.9
Sandusky County	57th	Relatively Low	67.7	6.4	71.4	62.2
Shelby County	56th	Relatively Low	63.3	10.3	68.5	86.5
Hancock County	54th	Relatively Low	65.4	1.9	67.3	60.6
Logan County	53th	Relatively Low	67.7	6.7	61.2	69.2
Meigs County	53th	Relatively Low	72.7	8.4	25.5	40.2
Darke County	53th	Relatively Low	60.1	12.3	81.8	80.1
Pickaway County	51th	Relatively Low	66.0	18.6	52.9	54.0
Huron County	50th	Relatively Low	60.5	15.7	67.3	52.6
Coshocton County	49th	Relatively Low	66.8	29.9	46.8	32.1
Gallia County	48th	Relatively Low	67.6	34.8	26.1	43.3
Hocking County	47th	Relatively Low	68.8	12.7	33.8	34.6
Seneca County	47th	Relatively Low	61.2	2.8	58.0	57.1
Ashland County	46th	Relatively Low	60.2	30.0	57.3	43.9
Williams County	44th	Relatively Low	51.8	12.1	74.4	63.0
Adams County	44th	Relatively Low	64.3	63.0	41.2	49.4
Preble County	43th	Relatively Low	51.4	13.6	76.7	63.2
Highland County	43th	Relatively Low	56.6	60.3	56.2	62.0
Pike County	43th	Relatively Low	63.9	24.2	37.4	43.3
Defiance County	42th	Very Low	59.4	6.9	63.7	52.6
Auglaize County	42th	Very Low	55.5	5.2	58.0	77.2
Guernsey County	38th	Very Low	58.9	31.1	36.8	38.5
Jackson County	36th	Very Low	57.2	20.4	33.9	45.5
Crawford County	35th	Very Low	51.9	3.1	42.0	52.0
Clinton County	34th	Very Low	44.7	8.9	55.5	65.4
Henry County	34th	Very Low	55.1	3.5	48.5	53.0
Fulton County	34th	Very Low	41.7	8.1	66.9	58.7
Putnam County	33th	Very Low	52.8	2.3	48.5	53.6
Union County	33th	Very Low	52.7	4.1	49.5	48.6
Mercer County	32th	Very Low	42.1	6.5	67.0	73.8
Monroe County	27th	Very Low	50.9	18.3	23.9	33.0
Champaign County	27th	Very Low	43.8	3.4	46.4	56.2
Perry County	26th	Very Low	47.0	18.4	32.4	36.2
Fayette County	26th	Very Low	42.5	5.1	43.3	57.7
Madison County	25th	Very Low	41.5	2.9	43.9	55.6
Hardin County	24th	Very Low	40.2	1.3	36.3	48.9
Morrow County	24th	Very Low	45.0	16.4	40.6	39.9
Paulding County	21th	Very Low	39.2	4.4	51.2	50.3
Van Wert County	20th	Very Low	33.7	3.4	48.2	57.0
Carroll County	20th	Very Low	42.8	24.7	28.0	27.0
Morgan County	18th	Very Low	45.3	11.2	17.0	24.7
Wyandot County	17th	Very Low	30.5	1.0	40.5	45.5
Noble County	13th	Very Low	35.8	22.6	24.7	28.7
Vinton County	12th	Very Low	34.6	4.0	21.3	28.1
Harrison County	11th	Very Low	27.3	17.0	18.2	23.8

Frequently Asked Questions

Which county in Ohio has the highest natural disaster risk?

Franklin County has the highest natural disaster risk in Ohio, rated Relatively High (98th percentile nationally), 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 in Ohio, rated Very Low (11th percentile nationally), 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.

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