Dawson County, MT: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Dawson County scores at the 28.1th 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 1 times a year. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Mandatory flood insurance compliance in Dawson County
FEMA hasn't published a residential structure count for Dawson County's mapped flood zone, so a reliable mandatory-compliance percentage can't be computed here — see the data quality guide for why this gap exists for roughly a quarter of US counties. Looking beyond the mandated zone, 0.1% of all residential structures in Dawson County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
How Dawson County compares nationally
Among the 3144 US counties FEMA scores for flood hazard, Dawson County ranks 2311 — 1 being the highest hazard nationally — and 2511 by population among all 3144 counties covered here, where 1 is the largest. Dawson County, Montana covers 2,371.926 square miles and counts roughly 8,731 residents.
Checking a specific address in Dawson County
4 of Dawson County's 5,381 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
Where Dawson County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Dawson 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.