Sheridan County, MT flood risk explained
Flood hazard in Sheridan County sits at the 13.3th 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 2 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 Sheridan County
FEMA hasn't published a residential structure count for Sheridan 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 Sheridan County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Sheridan County against the rest of the country
Among the 3144 US counties FEMA scores for flood hazard, Sheridan County ranks 2754 — 1 being the highest hazard nationally — and 2926 by population among all 3144 counties covered here, where 1 is the largest. About 3,448 people live in Sheridan County, Montana, spread over 1,676.941 square miles.
What to do next if you own or are buying in Sheridan County
FEMA counts 3,259 residential structures in Sheridan County overall, 0 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
Where Sheridan County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Sheridan 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.