Is Allen County, KY in a flood zone?
FEMA's National Risk Index puts Allen County's flood hazard at the 27.4th 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 once every 1 years. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Allen County's flood-insurance compliance gap
Homes with a federally backed mortgage inside Allen 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, 14.3% of them do — 12 active policies against 84 structures FEMA counts in that zone, leaving a real compliance gap. Across all residential structures in Allen County, not just the ones FEMA mandates, 0.2% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Allen County against the rest of the country
Allen County sits at rank 2331 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 1719 of 3144 by population (1 is biggest). Allen County, Kentucky covers 343.724 square miles and counts roughly 22,037 residents.
Checking a specific address in Allen County
16 of Allen County's 7,279 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 Allen 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.