Henry County, OH flood risk explained
Flood hazard in Henry County sits at the 55.1th 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 once every 2 years. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Mandatory flood insurance compliance in Henry County
FEMA hasn't published a residential structure count for Henry 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, 0.4% of all residential structures in Henry County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
How Henry County compares nationally
Among the 3144 US counties FEMA scores for flood hazard, Henry County ranks 1476 — 1 being the highest hazard nationally — and 1524 by population among all 3144 counties covered here, where 1 is the largest. Henry County, Ohio covers 416.013 square miles and counts roughly 27,536 residents.
What to do next if you own or are buying in Henry County
Across all of Henry County's 12,061 residential structures, 43 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Henry County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Henry 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.