Ohio natural disaster risk

Ratings for all 88 counties, the federal disaster record and flood insurance across the state.

51major disasters since 1953 (27th most)

$3.1Bexpected losses a year

0.4%of homes with flood insurance

Photo: Carol M Highsmith, CC0

Ohio has had 51 major federal disaster declarations for natural events since 1953. FEMA expects about $3.1 billion a year in losses from natural hazards across the state. Inland flooding is the costliest hazard in 88 of its 88 counties. None is rated Very High overall. About 0.4% of homes carry federal flood insurance, and the program has paid $371 million on 28,209 claims here since 1978.

Very High0counties

High3counties

Moderate8counties

Low51counties

Highest overall risk

1Franklin CountyHigh

2Cuyahoga CountyHigh

3Hamilton CountyHigh

4Montgomery CountyModerate

5Lucas CountyModerate

Lowest risk (50,000+ people)

1Union CountyVery Low

2Ashland CountyLow

3Seneca CountyLow

4Huron CountyLow

5Pickaway CountyLow

Top hazards

Inland floodingtop risk in 88 counties

Recent federal declarations

All states ›

Oct 2, 2026Severe Storms, Straight-Line Winds, Tornadoes, Flooding, and LandslidesMajor disaster

Largest counties

Franklin County

1,323,446 people

High Inland flooding

Cuyahoga County

1,264,334 people

High Inland flooding

Hamilton County

830,623 people

High Inland flooding

Summit County

540,333 people

Moderate Inland flooding

Montgomery County

537,193 people

Moderate Inland flooding

Lucas County

431,225 people

Moderate Inland flooding

Butler County

390,244 people

Moderate Inland flooding

Stark County

374,812 people

Moderate Inland flooding

Lorain County

312,902 people

Moderate Inland flooding

Warren County

242,269 people

Low Inland flooding

Lake County

232,492 people

Low Inland flooding

Mahoning County

228,579 people

Moderate Inland flooding

Cities in Ohio

All 63 cities ›

Columbus914,802 Cleveland366,097 Cincinnati311,224 Toledo267,463 Akron189,247 Dayton136,579 Parma79,870 Canton69,755 Lorain65,395 Hamilton63,468 Youngstown59,331 Springfield58,190 Kettering57,206 Elyria53,035 Middletown51,617

All 88 counties

Name	People	Overall risk	Top hazard	Declarations	Homes insured
Adams County	27,463	Low	Inland flooding	17	0.3%
Allen County	102,191	Low	Inland flooding	8	0.4%
Ashland County	52,443	Low	Inland flooding	9	0.4%
Ashtabula County	97,518	Low	Inland flooding	12	0.1%
Athens County	62,393	Low	Inland flooding	17	0.9%
Auglaize County	46,399	Very Low	Inland flooding	11	0.6%
Belmont County	66,461	Low	Inland flooding	20	0.4%
Brown County	43,652	Low	Inland flooding	17	0.4%
Butler County	390,244	Moderate	Inland flooding	12	0.5%
Carroll County	26,701	Very Low	Inland flooding	9	0.4%
Champaign County	38,673	Very Low	Inland flooding	9	0.4%
Clark County	135,980	Low	Inland flooding	9	0.5%
Clermont County	208,527	Low	Inland flooding	17	0.4%
Clinton County	41,956	Very Low	Inland flooding	8	0.4%
Columbiana County	101,872	Low	Inland flooding	16	0.2%
Coshocton County	36,580	Low	Inland flooding	14	0.3%
Crawford County	42,015	Very Low	Inland flooding	13	0.2%
Cuyahoga County	1,264,334	High	Inland flooding	16	0.2%
Darke County	51,868	Low	Inland flooding	11	0.3%
Defiance County	38,229	Very Low	Inland flooding	6	0.2%
Delaware County	213,208	Low	Inland flooding	13	0.3%
Erie County	75,596	Low	Inland flooding	11	1.2%
Fairfield County	158,878	Low	Inland flooding	11	0.8%
Fayette County	28,951	Very Low	Inland flooding	9	0.2%
Franklin County	1,323,446	High	Inland flooding	19	0.3%
Fulton County	42,713	Very Low	Inland flooding	7	0.3%
Gallia County	29,179	Low	Inland flooding	15	1%
Geauga County	95,397	Low	Inland flooding	10	0.2%
Greene County	167,939	Low	Inland flooding	14	0.7%
Guernsey County	38,372	Very Low	Inland flooding	15	0.4%
Hamilton County	830,623	High	Inland flooding	17	0.4%
Hancock County	74,885	Low	Inland flooding	12	1.4%
Hardin County	30,690	Very Low	Inland flooding	10	0.4%
Harrison County	14,475	Very Low	Inland flooding	16	0.4%
Henry County	27,662	Very Low	Inland flooding	8	0.4%
Highland County	43,282	Low	Inland flooding	10	0%
Hocking County	28,040	Low	Inland flooding	16	0.8%
Holmes County	44,196	Low	Inland flooding	10	0.3%
Huron County	58,532	Low	Inland flooding	11	0.3%
Jackson County	32,646	Very Low	Inland flooding	14	0.4%
Jefferson County	65,187	Low	Inland flooding	20	0.5%
Knox County	62,691	Low	Inland flooding	10	0.5%
Lake County	232,492	Low	Inland flooding	12	0.4%
Lawrence County	58,183	Low	Inland flooding	14	0.9%
Licking County	178,382	Low	Inland flooding	19	0.6%
Logan County	45,835	Low	Inland flooding	12	0.9%
Lorain County	312,902	Moderate	Inland flooding	16	0.5%
Lucas County	431,225	Moderate	Inland flooding	13	0.6%
Madison County	43,789	Very Low	Inland flooding	10	0.3%
Mahoning County	228,579	Moderate	Inland flooding	10	0.1%
Marion County	65,349	Low	Inland flooding	10	0.7%
Medina County	182,378	Low	Inland flooding	12	0.3%
Meigs County	22,183	Low	Inland flooding	16	1.1%
Mercer County	42,522	Very Low	Inland flooding	12	0.4%
Miami County	108,774	Low	Inland flooding	13	0.7%
Monroe County	13,379	Very Low	Inland flooding	20	0.3%
Montgomery County	537,193	Moderate	Inland flooding	11	0.5%
Morgan County	13,787	Very Low	Inland flooding	16	0.5%
Morrow County	34,943	Very Low	Inland flooding	14	0.2%
Muskingum County	86,374	Low	Inland flooding	16	0.3%
Noble County	14,107	Very Low	Inland flooding	16	0.7%
Ottawa County	40,343	Low	Inland flooding	11	2.1%
Paulding County	18,790	Very Low	Inland flooding	11	0.6%
Perry County	35,327	Very Low	Inland flooding	18	0.6%
Pickaway County	58,527	Low	Inland flooding	13	0.3%
Pike County	27,037	Low	Inland flooding	15	0.6%
Portage County	161,780	Low	Inland flooding	9	0.4%
Preble County	40,984	Low	Inland flooding	9	0.5%
Putnam County	34,443	Very Low	Inland flooding	11	0.8%
Richland County	124,906	Low	Inland flooding	16	0.2%
Ross County	77,071	Low	Inland flooding	14	0.2%
Sandusky County	58,813	Low	Inland flooding	11	0.5%
Scioto County	73,911	Low	Inland flooding	16	0.7%
Seneca County	55,063	Low	Inland flooding	11	0.3%
Shelby County	48,215	Low	Inland flooding	13	0.7%
Stark County	374,812	Moderate	Inland flooding	10	0.2%
Summit County	540,333	Moderate	Inland flooding	11	0.4%
Trumbull County	201,961	Moderate	Inland flooding	9	0.4%
Tuscarawas County	93,231	Low	Inland flooding	11	0.5%
Union County	62,265	Very Low	Inland flooding	11	0.3%
Van Wert County	28,929	Very Low	Inland flooding	11	0.3%
Vinton County	12,767	Very Low	Inland flooding	14	0.1%
Warren County	242,269	Low	Inland flooding	11	0.5%
Washington County	59,732	Low	Inland flooding	18	1.2%
Wayne County	116,847	Low	Inland flooding	8	0.3%
Williams County	37,098	Low	Inland flooding	6	0.2%
Wood County	132,182	Low	Inland flooding	8	0.3%
Wyandot County	21,893	Very Low	Inland flooding	10	1.1%

Linked names have a full page. Overall risk from the FEMA National Risk Index (December 2025); declarations are federal disaster and emergency declarations for natural events since 1953 (OpenFEMA); homes insured is the share with NFIP flood policies.