Clay County, IA flood risk explained
Flood hazard in Clay County sits at the 53.8th national percentile, below the national norm for flood hazard; driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about 3.6 times a year. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Clay County's flood-insurance compliance gap
FEMA hasn't published a residential structure count for Clay County's mapped flood zone, so a reliable mandatory-compliance percentage can't be computed here — see the data quality guide for why this gap exists for roughly a quarter of US counties. Looking beyond the mandated zone, 1.8% of all residential structures in Clay County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Where Clay County ranks
Among the 3144 US counties FEMA scores for flood hazard, Clay County ranks 1517 — 1 being the highest hazard nationally — and 2006 by population among all 3144 counties covered here, where 1 is the largest. About 16,474 people live in Clay County, Iowa, spread over 567.238 square miles.
Your street may differ from Clay County's average
Across all of Clay County's 7,377 residential structures, 133 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Clay County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Clay County's compliance figure is one of the ones affected by FEMA's incomplete denominator data — the data quality guide explains what that means and how many counties it touches.