Grant County, OR: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Grant County scores at the 50.2th percentile for flood hazard, rated "Relatively Low" — below the national norm for flood hazard. 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 once every 3 years. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Grant County's flood-insurance compliance gap
FEMA's own figures for Grant County report more NFIP policies in the mapped flood zone than FEMA's own count of residential structures there, which produces a compliance rate over 100% — a data problem on FEMA's side, not evidence that everyone here is over-insured. See the data quality guide for how widespread this is. Looking beyond the mandated zone, 1% of all residential structures in Grant County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
How Grant County compares nationally
Among the 3144 US counties FEMA scores for flood hazard, Grant County ranks 1630 — 1 being the highest hazard nationally — and 2652 by population among all 3144 counties covered here, where 1 is the largest. Grant County, Oregon covers 4,527.792 square miles and counts roughly 7,093 residents.
What to do next if you own or are buying in Grant County
FEMA counts 3,808 residential structures in Grant County overall, 38 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
Where Grant County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Grant County's compliance figure is one of the ones affected by FEMA's incomplete denominator data — the data quality guide explains what that means and how many counties it touches.