Utah County, UT: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Utah County scores at the 90.5th percentile for flood hazard, rated "Relatively Moderate" — a middling flood hazard by national standards. 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 1.1 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.
Utah County's flood-insurance compliance gap
Homes with a federally backed mortgage inside Utah 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, 26.9% of them do — 238 active policies against 886 structures FEMA counts in that zone, leaving a real compliance gap. Looking beyond the mandated zone, 0.3% of all residential structures in Utah County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
How Utah County compares nationally
Among the 3144 US counties FEMA scores for flood hazard, Utah County ranks 316 — 1 being the highest hazard nationally — and 90 by population among all 3144 counties covered here, where 1 is the largest. Utah County, Utah covers 2,004.46 square miles and counts roughly 747,234 residents.
What to do next if you own or are buying in Utah County
Across all of Utah County's 173,860 residential structures, 514 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Utah 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.