How much flood risk does Marshall County actually carry?
Marshall County lands at the 29.2th percentile of FEMA's National Risk Index for flooding, "Very Low" territory — among the lowest flood hazard in the country — with the hazard driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about 1 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.
Mandatory flood insurance compliance in Marshall County
Out of 90 homes FEMA counts inside Marshall County's mapped flood zone, 0 carry the flood policy federal law requires there — 0% compliance, short of full coverage. Across all residential structures in Marshall County, not just the ones FEMA mandates, 0% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Marshall County against the rest of the country
Marshall County sits at rank 2281 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2410 of 3144 by population (1 is biggest). About 9,950 people live in Marshall County, Kansas, spread over 900.178 square miles.
Your street may differ from Marshall County's average
0 of Marshall County's 6,730 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 Marshall 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.