Greene County, PA: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Greene County scores at the 74.3th percentile for flood hazard, rated "Relatively Moderate" — a middling flood hazard by national standards. 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 1.9 times a year. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Greene County's flood-insurance compliance gap
14.3% of the homes FEMA requires to carry flood insurance in Greene County — those inside the mapped Special Flood Hazard Area — actually have a policy in force: 74 policies against 516 mandated structures, which means a meaningful share of legally-required coverage simply isn't there. Looking beyond the mandated zone, 0.7% of all residential structures in Greene County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
How Greene County compares nationally
Among the 3144 US counties FEMA scores for flood hazard, Greene County ranks 845 — 1 being the highest hazard nationally — and 1340 by population among all 3144 counties covered here, where 1 is the largest. About 33,960 people live in Greene County, Pennsylvania, spread over 575.932 square miles.
What to do next if you own or are buying in Greene County
Across all of Greene County's 12,213 residential structures, 87 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Greene 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.