Is Athens County, OH in a flood zone?
FEMA's National Risk Index puts Athens County's flood hazard at the 83.7th percentile nationally — a middling flood hazard by national standards — driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about 3.1 times a year. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Athens County's flood-insurance compliance gap
Homes with a federally backed mortgage inside Athens County's mapped high-risk flood zone (the Special Flood Hazard Area, or SFHA) are legally required to carry an NFIP flood policy. In practice, 5.9% of them do — 144 active policies against 2,430 structures FEMA counts in that zone, leaving a real compliance gap. Across all residential structures in Athens County, not just the ones FEMA mandates, 0.9% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Athens County against the rest of the country
Athens County sits at rank 534 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 861 of 3144 by population (1 is biggest). Athens County, Ohio is home to about 63,218 people across 503.643 square miles of land.
Checking a specific address in Athens County
166 of Athens County's 19,573 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
More on how this number was built
The methodology guide shows exactly which FEMA and Census tables feed Athens County's numbers. The guide to what the Special Flood Hazard Area actually means explains why the mandatory-insurance rule exists and who it applies to.