Shannon County, MO: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Shannon County scores at the 46th percentile for flood hazard, rated "Relatively Low" — below the national norm for flood hazard. 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 3 times a year. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Who actually carries the flood insurance FEMA requires
FEMA hasn't published a residential structure count for Shannon 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 Shannon County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Where Shannon County ranks
Among the 3144 US counties FEMA scores for flood hazard, Shannon County ranks 1760 — 1 being the highest hazard nationally — and 2638 by population among all 3144 counties covered here, where 1 is the largest. Shannon County, Missouri covers 1,003.82 square miles and counts roughly 7,275 residents.
Checking a specific address in Shannon County
Across all of Shannon County's 4,469 residential structures, 4 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Shannon County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Shannon 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.