Bannock County, ID flood risk explained
Flood hazard in Bannock County sits at the 51.9th national percentile, 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 1.9 times a year. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Bannock County's flood-insurance compliance gap
9.9% of the homes FEMA requires to carry flood insurance in Bannock County — those inside the mapped Special Flood Hazard Area — actually have a policy in force: 59 policies against 596 mandated structures, which means a meaningful share of legally-required coverage simply isn't there. Looking beyond the mandated zone, 0.3% of all residential structures in Bannock County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Where Bannock County ranks
Among the 3144 US counties FEMA scores for flood hazard, Bannock County ranks 1576 — 1 being the highest hazard nationally — and 666 by population among all 3144 counties covered here, where 1 is the largest. Bannock County, Idaho is home to about 91,010 people across 1,112.49 square miles of land.
Your street may differ from Bannock County's average
Across all of Bannock County's 27,730 residential structures, 72 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Bannock 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.