Is Thomas County, KS in a flood zone?
FEMA's National Risk Index puts Thomas County's flood hazard at the 6.3th 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 once every 1 years. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Thomas County's flood-insurance compliance gap
Thomas 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 Thomas County, not just the ones FEMA mandates, 0.4% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Where Thomas County ranks
Thomas County sits at rank 2956 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2590 of 3144 by population (1 is biggest). Thomas County, Kansas covers 1,074.687 square miles and counts roughly 7,802 residents.
What to do next if you own or are buying in Thomas County
FEMA counts 4,129 residential structures in Thomas County overall, 17 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 Thomas County's numbers. See the data quality guide for why Thomas County, like hundreds of other counties, doesn't get a clean compliance percentage.