Alfalfa County, OK: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Alfalfa County scores at the 22.4th 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. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Mandatory flood insurance compliance in Alfalfa County
FEMA hasn't published a residential structure count for Alfalfa 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, 0.7% of all residential structures in Alfalfa County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Alfalfa County against the rest of the country
Among the 3144 US counties FEMA scores for flood hazard, Alfalfa County ranks 2482 — 1 being the highest hazard nationally — and 2761 by population among all 3144 counties covered here, where 1 is the largest. Alfalfa County, Oklahoma is home to about 5,712 people across 866.565 square miles of land.
Your street may differ from Alfalfa County's average
23 of Alfalfa County's 3,312 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
Where Alfalfa County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Alfalfa 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.