Grand County, UT: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Grand County scores at the 25.4th percentile for flood hazard, rated "Very Low" — among the lowest flood hazard in the country. The hazard here is driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about 2.5 times a year. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Grand County's flood-insurance compliance gap
Out of 192 homes FEMA counts inside Grand County's mapped flood zone, 63 carry the flood policy federal law requires there — 32.8% compliance, short of full coverage. Looking beyond the mandated zone, 2.2% of all residential structures in Grand County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
How Grand County compares nationally
Among the 3144 US counties FEMA scores for flood hazard, Grand County ranks 2389 — 1 being the highest hazard nationally — and 2429 by population among all 3144 counties covered here, where 1 is the largest. Grand County, Utah is home to about 9,788 people across 3,672.858 square miles of land.
Your street may differ from Grand County's average
101 of Grand County's 4,655 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
Where Grand 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.