How much flood risk does Vernon County actually carry?
Vernon County lands at the 49.8th percentile of FEMA's National Risk Index for flooding, "Relatively Low" territory — below the national norm for flood hazard — with the hazard driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about 2.9 times a year. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Who actually carries the flood insurance FEMA requires
3.8% of the homes FEMA requires to carry flood insurance in Vernon County — those inside the mapped Special Flood Hazard Area — actually have a policy in force: 4 policies against 105 mandated structures, which means a meaningful share of legally-required coverage simply isn't there. Across all residential structures in Vernon County, not just the ones FEMA mandates, 0.1% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
How Vernon County compares nationally
Vernon County sits at rank 1639 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 1841 of 3144 by population (1 is biggest). Vernon County, Missouri covers 826.391 square miles and counts roughly 19,787 residents.
Checking a specific address in Vernon County
7 of Vernon County's 10,380 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
More on how this number was built
The methodology guide shows exactly which FEMA and Census tables feed Vernon 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.