Flood Risk by County in Ohio

Ohio: 88 counties covered

Across 88 Ohio counties with a FEMA flood score, the average national percentile is 67.3, but that average hides real spread between counties, which is why each one gets its own page rather than a single statewide number.

• Franklin County, 98.8th percentile, Relatively High
• Cuyahoga County, 98.7th percentile, Relatively High
• Hamilton County, 96.9th percentile, Relatively High
• Summit County, 94th percentile, Relatively High
• Montgomery County, 95.5th percentile, Relatively High
• Lucas County, 95.4th percentile, Relatively High
• Butler County, 93th percentile, Relatively Moderate
• Stark County, 91.7th percentile, Relatively Moderate
• Lorain County, 90.2th percentile, Relatively Moderate
• Warren County, 83.9th percentile, Relatively Moderate
• Delaware County, 86.4th percentile, Relatively Moderate
• Lake County, 86.1th percentile, Relatively Moderate
• Mahoning County, 88.1th percentile, Relatively Moderate
• Clermont County, 81.3th percentile, Relatively Moderate
• Trumbull County, 88.8th percentile, Relatively Moderate
• Licking County, 86th percentile, Relatively Moderate
• Medina County, 75.5th percentile, Relatively Moderate
• Greene County, 75.4th percentile, Relatively Moderate
• Fairfield County, 81.8th percentile, Relatively Moderate
• Portage County, 75.3th percentile, Relatively Moderate
• Clark County, 84.2th percentile, Relatively Moderate
• Wood County, 75.7th percentile, Relatively Moderate
• Richland County, 71.6th percentile, Relatively Low
• Wayne County, 71.9th percentile, Relatively Low
• Miami County, 70.1th percentile, Relatively Low
• Allen County, 83th percentile, Relatively Moderate
• Columbiana County, 82.2th percentile, Relatively Moderate
• Ashtabula County, 72.6th percentile, Relatively Low
• Geauga County, 73.3th percentile, Relatively Moderate
• Tuscarawas County, 82.3th percentile, Relatively Moderate
• Muskingum County, 83.8th percentile, Relatively Moderate
• Ross County, 74.5th percentile, Relatively Moderate
• Hancock County, 65.4th percentile, Relatively Low
• Erie County, 71.8th percentile, Relatively Low
• Scioto County, 82th percentile, Relatively Moderate
• Union County, 52.7th percentile, Relatively Low
• Marion County, 64.9th percentile, Relatively Low
• Belmont County, 87th percentile, Relatively Moderate
• Jefferson County, 81.6th percentile, Relatively Moderate
• Knox County, 72th percentile, Relatively Low
• Athens County, 83.7th percentile, Relatively Moderate
• Pickaway County, 66th percentile, Relatively Low
• Sandusky County, 67.7th percentile, Relatively Low
• Washington County, 80.5th percentile, Relatively Moderate
• Huron County, 60.5th percentile, Relatively Low
• Lawrence County, 83.7th percentile, Relatively Moderate
• Seneca County, 61.2th percentile, Relatively Low
• Ashland County, 60.2th percentile, Relatively Low
• Darke County, 60.1th percentile, Relatively Low
• Shelby County, 63.3th percentile, Relatively Low
• Logan County, 67.7th percentile, Relatively Low
• Auglaize County, 55.5th percentile, Relatively Low
• Madison County, 41.5th percentile, Relatively Low
• Holmes County, 71.2th percentile, Relatively Low
• Brown County, 75th percentile, Relatively Moderate
• Highland County, 56.6th percentile, Relatively Low
• Mercer County, 42.1th percentile, Relatively Low
• Fulton County, 41.7th percentile, Relatively Low
• Clinton County, 44.7th percentile, Relatively Low
• Crawford County, 51.9th percentile, Relatively Low
• Preble County, 51.4th percentile, Relatively Low
• Ottawa County, 72.6th percentile, Relatively Low
• Champaign County, 43.8th percentile, Relatively Low
• Defiance County, 59.4th percentile, Relatively Low
• Guernsey County, 58.9th percentile, Relatively Low
• Coshocton County, 66.8th percentile, Relatively Low
• Williams County, 51.8th percentile, Relatively Low
• Morrow County, 45th percentile, Relatively Low
• Perry County, 47th percentile, Relatively Low
• Putnam County, 52.8th percentile, Relatively Low
• Jackson County, 57.2th percentile, Relatively Low
• Hardin County, 40.2th percentile, Relatively Low
• Van Wert County, 33.7th percentile, Very Low
• Gallia County, 67.6th percentile, Relatively Low
• Fayette County, 42.5th percentile, Relatively Low
• Adams County, 64.3th percentile, Relatively Low
• Henry County, 55.1th percentile, Relatively Low
• Hocking County, 68.8th percentile, Relatively Low
• Pike County, 63.9th percentile, Relatively Low
• Carroll County, 42.8th percentile, Relatively Low
• Meigs County, 72.7th percentile, Relatively Low
• Wyandot County, 30.5th percentile, Very Low
• Paulding County, 39.2th percentile, Relatively Low
• Noble County, 35.8th percentile, Relatively Low
• Harrison County, 27.3th percentile, Very Low
• Morgan County, 45.3th percentile, Relatively Low
• Monroe County, 50.9th percentile, Relatively Low
• Vinton County, 34.6th percentile, Very Low