Is Wilson County, KS in a flood zone?
FEMA's National Risk Index puts Wilson County's flood hazard at the 25.7th percentile nationally — among the lowest flood hazard in the country — driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about 1.4 times a year. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Mandatory flood insurance compliance in Wilson County
Homes with a federally backed mortgage inside Wilson County's mapped high-risk flood zone (the Special Flood Hazard Area, or SFHA) are legally required to carry an NFIP flood policy. In practice, 15.1% of them do — 22 active policies against 146 structures FEMA counts in that zone, leaving a real compliance gap. Across all residential structures in Wilson County, not just the ones FEMA mandates, 0.6% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Wilson County against the rest of the country
Wilson County sits at rank 2383 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2546 of 3144 by population (1 is biggest). Wilson County, Kansas is home to about 8,398 people across 570.423 square miles of land.
Checking a specific address in Wilson County
FEMA counts 4,765 residential structures in Wilson County overall, 26 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
More on how this number was built
The methodology guide shows exactly which FEMA and Census tables feed Wilson 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.