Clark County, NV flood risk explained
Flood hazard in Clark County sits at the 99.6th national percentile, among the highest 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 7.3 times a year. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Mandatory flood insurance compliance in Clark County
Out of 964 homes FEMA counts inside Clark County's mapped flood zone, 291 carry the flood policy federal law requires there — 30.2% compliance, short of full coverage. Looking beyond the mandated zone, 0.2% of all residential structures in Clark County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Clark County against the rest of the country
Among the 3144 US counties FEMA scores for flood hazard, Clark County ranks 16 — 1 being the highest hazard nationally — and 11 by population among all 3144 counties covered here, where 1 is the largest. About 2,398,871 people live in Clark County, Nevada, spread over 7,891.661 square miles.
What to do next if you own or are buying in Clark County
FEMA counts 719,687 residential structures in Clark County overall, 1,197 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
Where Clark County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. If you're unsure why any of this insurance requirement exists at all, the SFHA explainer covers it from first principles.