Harrison County, WV flood risk explained
Flood hazard in Harrison County sits at the 86.7th national percentile, a middling flood hazard by national standards; driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about 2.8 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 Harrison County
Homes with a federally backed mortgage inside Harrison County's mapped high-risk flood zone (the Special Flood Hazard Area, or SFHA) are legally required to carry an NFIP flood policy. In practice, 9.9% of them do — 126 active policies against 1,277 structures FEMA counts in that zone, leaving a real compliance gap. Looking beyond the mandated zone, 0.6% of all residential structures in Harrison County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
How Harrison County compares nationally
Among the 3144 US counties FEMA scores for flood hazard, Harrison County ranks 440 — 1 being the highest hazard nationally — and 848 by population among all 3144 counties covered here, where 1 is the largest. Harrison County, West Virginia covers 416.01 square miles and counts roughly 64,472 residents.
Your street may differ from Harrison County's average
162 of Harrison County's 29,563 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
Where Harrison 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.