Alcorn County, MS flood risk explained
Flood hazard in Alcorn County sits at the 51.6th national percentile, below the national norm for flood hazard; driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about 1.4 times a year. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Mandatory flood insurance compliance in Alcorn County
Out of 195 homes FEMA counts inside Alcorn County's mapped flood zone, 17 carry the flood policy federal law requires there — 8.7% compliance, short of full coverage. Looking beyond the mandated zone, 0.4% of all residential structures in Alcorn County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Alcorn County against the rest of the country
Among the 3144 US counties FEMA scores for flood hazard, Alcorn County ranks 1587 — 1 being the highest hazard nationally — and 1328 by population among all 3144 counties covered here, where 1 is the largest. Alcorn County, Mississippi is home to about 34,228 people across 400.047 square miles of land.
What to do next if you own or are buying in Alcorn County
59 of Alcorn County's 15,195 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
Where Alcorn County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. If you're unsure why any of this insurance requirement exists at all, the SFHA explainer covers it from first principles.