Is Greene County, MO in a flood zone?
FEMA's National Risk Index puts Greene County's flood hazard at the 88.8th percentile nationally — 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 6.1 times a year. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Who actually carries the flood insurance FEMA requires
Out of 663 homes FEMA counts inside Greene County's mapped flood zone, 77 carry the flood policy federal law requires there — 11.6% compliance, short of full coverage. Across all residential structures in Greene County, not just the ones FEMA mandates, 0.2% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Where Greene County ranks
Greene County sits at rank 368 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 238 of 3144 by population (1 is biggest). About 307,942 people live in Greene County, Missouri, spread over 675.329 square miles.
Your street may differ from Greene County's average
Across all of Greene County's 103,114 residential structures, 179 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
More on how this number was built
The methodology guide shows exactly which FEMA and Census tables feed Greene County's numbers. The guide to what the Special Flood Hazard Area actually means explains why the mandatory-insurance rule exists and who it applies to.