Kalawao County, HI: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Kalawao County scores at the 18.2th percentile for flood hazard, rated "Very Low" — among the lowest flood hazard in the country. The hazard here is driven by coastal storm surge rather than inland rivers — FEMA's model puts a surge event here at about once every 3 years. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Kalawao County's flood-insurance compliance gap
FEMA hasn't published a residential structure count for Kalawao 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, 0% of all residential structures in Kalawao County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Kalawao County against the rest of the country
Among the 3144 US counties FEMA scores for flood hazard, Kalawao County ranks 2612 — 1 being the highest hazard nationally — and 3143 by population among all 3144 counties covered here, where 1 is the largest. About 81 people live in Kalawao County, Hawaii, spread over 11.991 square miles.
Checking a specific address in Kalawao County
Across all of Kalawao County's 54 residential structures, 0 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Kalawao County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Kalawao 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.