Reference only. Data sourced from HUD/FHFA (2025). This site is a private entity and not affiliated with any government agency.
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Ohio
Flood risk by county
National Risk Index scores attached to every county calculator.
County
Risk
Score
Details
Adams County
Very High
98
View
Allen County
High
61
View
Ashland County
Low
23
View
Ashtabula County
Low
23
View
Athens County
Low
23
View
Auglaize County
Very High
95
View
Belmont County
Very High
97
View
Brown County
Moderate
34
View
Butler County
Moderate
34
View
Carroll County
Moderate
31
View
Champaign County
Very High
93
View
Clark County
Very High
88
View
Clermont County
Moderate
34
View
Clinton County
Very High
97
View
Columbiana County
Very High
82
View
Coshocton County
Moderate
37
View
Crawford County
Moderate
30
View
Cuyahoga County
Moderate
34
View
Darke County
Moderate
49
View
Defiance County
Moderate
39
View
Delaware County
Moderate
36
View
Erie County
Very High
83
View
Fairfield County
Moderate
36
View
Fayette County
Very High
95
View
Franklin County
Moderate
36
View
Fulton County
Very High
91
View
Gallia County
High
77
View
Geauga County
Moderate
34
View
Greene County
Moderate
38
View
Guernsey County
Moderate
31
View
Hamilton County
Moderate
34
View
Hancock County
Moderate
44
View
Hardin County
Very High
98
View
Harrison County
Very High
98
View
Henry County
Very High
98
View
Highland County
Very High
98
View
Hocking County
Moderate
36
View
Holmes County
Very High
98
View
Huron County
High
71
View
Jackson County
Moderate
54
View
Jefferson County
Very High
96
View
Knox County
High
69
View
Lake County
Moderate
34
View
Lawrence County
Moderate
53
View
Licking County
Moderate
36
View
Logan County
Low
26
View
Lorain County
Moderate
34
View
Lucas County
Very High
91
View
Madison County
Moderate
36
View
Mahoning County
Very High
99
View
Marion County
High
64
View
Medina County
Moderate
34
View
Meigs County
Very High
98
View
Mercer County
Moderate
32
View
Miami County
Moderate
38
View
Monroe County
Very High
98
View
Montgomery County
Moderate
38
View
Morgan County
Very High
98
View
Morrow County
Moderate
36
View
Muskingum County
Very High
99
View
Noble County
Very High
98
View
Ottawa County
Very High
91
View
Paulding County
Very High
98
View
Perry County
Moderate
36
View
Pickaway County
Moderate
36
View
Pike County
Very High
98
View
Portage County
Low
20
View
Preble County
Very High
98
View
Putnam County
Very High
98
View
Richland County
High
63
View
Ross County
Moderate
34
View
Sandusky County
Moderate
46
View
Scioto County
High
78
View
Seneca County
Very High
91
View
Shelby County
Very High
86
View
Stark County
Moderate
31
View
Summit County
Low
20
View
Trumbull County
Very High
99
View
Tuscarawas County
High
70
View
Union County
Moderate
36
View
Van Wert County
Very High
93
View
Vinton County
Very High
98
View
Warren County
Moderate
34
View
Washington County
High
63
View
Wayne County
Very High
98
View
Williams County
Very High
98
View
Wood County
Very High
91
View
Wyandot County
Very High
98
View