Is Cheyenne County, NE in a flood zone?
FEMA's National Risk Index puts Cheyenne County's flood hazard at the 27.7th 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 1.1 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.
Cheyenne County's flood-insurance compliance gap
Cheyenne 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 Cheyenne 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.
Where Cheyenne County ranks
Cheyenne County sits at rank 2321 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2440 of 3144 by population (1 is biggest). Cheyenne County, Nebraska covers 1,196.008 square miles and counts roughly 9,602 residents.
Checking a specific address in Cheyenne County
8 of Cheyenne County's 5,607 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 Cheyenne County's numbers. See the data quality guide for why Cheyenne County, like hundreds of other counties, doesn't get a clean compliance percentage.