Haakon County, SD: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Haakon County scores at the 22th 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 once every 1 years. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Haakon County's flood-insurance compliance gap
FEMA hasn't published a residential structure count for Haakon 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, 0.5% of all residential structures in Haakon County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Haakon County against the rest of the country
Among the 3144 US counties FEMA scores for flood hazard, Haakon County ranks 2495 — 1 being the highest hazard nationally — and 3052 by population among all 3144 counties covered here, where 1 is the largest. Haakon County, South Dakota is home to about 1,834 people across 1,810.541 square miles of land.
Checking a specific address in Haakon County
Across all of Haakon County's 940 residential structures, 5 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Haakon County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Haakon 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.