Edmunds County, SD flood risk explained
Flood hazard in Edmunds County sits at the 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 1 times a year. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Edmunds County's flood-insurance compliance gap
FEMA hasn't published a residential structure count for Edmunds 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 Edmunds County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
How Edmunds County compares nationally
Among the 3144 US counties FEMA scores for flood hazard, Edmunds County ranks 2906 — 1 being the highest hazard nationally — and 2883 by population among all 3144 counties covered here, where 1 is the largest. Edmunds County, South Dakota is home to about 4,027 people across 1,125.98 square miles of land.
Your street may differ from Edmunds County's average
FEMA counts 3,552 residential structures in Edmunds County overall, 1 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
Where Edmunds County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Edmunds 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.