Is Crook County, WY in a flood zone?
FEMA's National Risk Index puts Crook County's flood hazard at the 20.1th 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. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Mandatory flood insurance compliance in Crook County
Crook 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 Crook 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 Crook County ranks
Crook County sits at rank 2554 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2593 of 3144 by population (1 is biggest). Crook County, Wyoming is home to about 7,775 people across 2,854.48 square miles of land.
Checking a specific address in Crook County
6 of Crook County's 5,680 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 Crook County's numbers. See the data quality guide for why Crook County, like hundreds of other counties, doesn't get a clean compliance percentage.