Is Lyon County, KY in a flood zone?
FEMA's National Risk Index puts Lyon County's flood hazard at the 18.2th percentile nationally — among the lowest flood hazard in the country — driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about 1 times a year. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Lyon County's flood-insurance compliance gap
Out of 59 homes FEMA counts inside Lyon County's mapped flood zone, 0 carry the flood policy federal law requires there — 0% compliance, short of full coverage. Across all residential structures in Lyon County, not just the ones FEMA mandates, 0% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Lyon County against the rest of the country
Lyon County sits at rank 2610 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2489 of 3144 by population (1 is biggest). Lyon County, Kentucky covers 213.785 square miles and counts roughly 9,078 residents.
Your street may differ from Lyon County's average
0 of Lyon County's 5,008 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 Lyon 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.