Greene County, IN: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Greene County scores at the 52th percentile for flood hazard, rated "Relatively Low" — below the national norm for flood hazard. 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 3.4 times a year. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Greene County's flood-insurance compliance gap
Out of 263 homes FEMA counts inside Greene County's mapped flood zone, 37 carry the flood policy federal law requires there — 14.1% compliance, short of full coverage. Looking beyond the mandated zone, 0.3% 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.
Greene County against the rest of the country
Among the 3144 US counties FEMA scores for flood hazard, Greene County ranks 1574 — 1 being the highest hazard nationally — and 1409 by population among all 3144 counties covered here, where 1 is the largest. Greene County, Indiana covers 542.469 square miles and counts roughly 31,219 residents.
Checking a specific address in Greene County
Across all of Greene County's 14,293 residential structures, 45 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.