How much flood risk does Audubon County actually carry?
Audubon County lands at the 19.8th percentile of FEMA's National Risk Index for flooding, "Very Low" territory — among the lowest flood hazard in the country — with the hazard 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. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Who actually carries the flood insurance FEMA requires
0% of the homes FEMA requires to carry flood insurance in Audubon County — those inside the mapped Special Flood Hazard Area — actually have a policy in force: 0 policies against 24 mandated structures, which means a meaningful share of legally-required coverage simply isn't there. Across all residential structures in Audubon 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.
Where Audubon County ranks
Audubon County sits at rank 2566 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2772 of 3144 by population (1 is biggest). About 5,562 people live in Audubon County, Iowa, spread over 442.96 square miles.
What to do next if you own or are buying in Audubon County
FEMA counts 3,221 residential structures in Audubon County overall, 0 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
More on how this number was built
The methodology guide shows exactly which FEMA and Census tables feed Audubon 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.