Cheyenne County, CO: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Cheyenne County scores at the 4th percentile for flood hazard, rated "Very Low" — among the lowest flood hazard in the country. The hazard here is 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 Cheyenne County
FEMA hasn't published a residential structure count for Cheyenne County's mapped flood zone, so a reliable mandatory-compliance percentage can't be computed here — see the data quality guide for why this gap exists for roughly a quarter of US counties. Looking beyond the mandated zone, 0% of all residential structures in Cheyenne County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Where Cheyenne County ranks
Among the 3144 US counties FEMA scores for flood hazard, Cheyenne County ranks 3024 — 1 being the highest hazard nationally — and 3065 by population among all 3144 counties covered here, where 1 is the largest. Cheyenne County, Colorado is home to about 1,712 people across 1,778.276 square miles of land.
Your street may differ from Cheyenne County's average
0 of Cheyenne County's 1,313 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
Where Cheyenne County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Cheyenne County's compliance figure is one of the ones affected by FEMA's incomplete denominator data — the data quality guide explains what that means and how many counties it touches.