Is Weber County, UT in a flood zone?
FEMA's National Risk Index puts Weber County's flood hazard at the 67.6th percentile nationally — 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 once every 2 years. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Weber County's flood-insurance compliance gap
Homes with a federally backed mortgage inside Weber County's mapped high-risk flood zone (the Special Flood Hazard Area, or SFHA) are legally required to carry an NFIP flood policy. In practice, 8.4% of them do — 87 active policies against 1,041 structures FEMA counts in that zone, leaving a real compliance gap. Across all residential structures in Weber County, not just the ones FEMA mandates, 0.3% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Where Weber County ranks
Weber County sits at rank 1063 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 265 of 3144 by population (1 is biggest). Weber County, Utah is home to about 276,118 people across 611.023 square miles of land.
Your street may differ from Weber County's average
FEMA counts 89,611 residential structures in Weber County overall, 227 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 Weber 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.