How much flood risk does Anderson County actually carry?
Anderson County lands at the 19.2th 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 1.9 times a year. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Anderson County's flood-insurance compliance gap
Anderson County is one of the counties where FEMA's own denominator for mandated flood-zone structures is missing, so no compliance rate is shown rather than a guessed one — the data quality guide covers how common this is. Across all residential structures in Anderson 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.
Anderson County against the rest of the country
Anderson County sits at rank 2579 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2581 of 3144 by population (1 is biggest). Anderson County, Kansas covers 579.641 square miles and counts roughly 7,908 residents.
What to do next if you own or are buying in Anderson County
FEMA counts 3,600 residential structures in Anderson County overall, 5 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 Anderson County's numbers. See the data quality guide for why Anderson County, like hundreds of other counties, doesn't get a clean compliance percentage.