Prairie County, MT flood risk explained
Flood hazard in Prairie County sits at the 5.8th national percentile, among the lowest flood hazard in the country; driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about once every 1 years. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Mandatory flood insurance compliance in Prairie County
FEMA hasn't published a residential structure count for Prairie 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% of all residential structures in Prairie County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Where Prairie County ranks
Among the 3144 US counties FEMA scores for flood hazard, Prairie County ranks 2971 — 1 being the highest hazard nationally — and 3103 by population among all 3144 counties covered here, where 1 is the largest. Prairie County, Montana is home to about 1,112 people across 1,736.603 square miles of land.
What to do next if you own or are buying in Prairie County
Across all of Prairie County's 1,321 residential structures, 0 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Prairie County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Prairie 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.