How much flood risk does Wasatch County actually carry?
Wasatch County lands at the 32.3th 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 28 years. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Mandatory flood insurance compliance in Wasatch County
Out of 101 homes FEMA counts inside Wasatch County's mapped flood zone, 41 carry the flood policy federal law requires there — 40.6% compliance, short of full coverage. Across all residential structures in Wasatch County, not just the ones FEMA mandates, 0.7% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Wasatch County against the rest of the country
Wasatch County sits at rank 2187 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 1242 of 3144 by population (1 is biggest). Wasatch County, Utah covers 1,176.952 square miles and counts roughly 37,858 residents.
Checking a specific address in Wasatch County
Across all of Wasatch County's 14,006 residential structures, 101 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
More on how this number was built
The methodology guide shows exactly which FEMA and Census tables feed Wasatch 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.