Douglas County, CO flood risk explained
Flood hazard in Douglas County sits at the 86.9th national percentile, a middling flood hazard by national standards; driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about 1.4 times a year. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Mandatory flood insurance compliance in Douglas County
Out of 71 homes FEMA counts inside Douglas County's mapped flood zone, 14 carry the flood policy federal law requires there — 19.7% compliance, short of full coverage. Looking beyond the mandated zone, 0.3% of all residential structures in Douglas County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Douglas County against the rest of the country
Among the 3144 US counties FEMA scores for flood hazard, Douglas County ranks 431 — 1 being the highest hazard nationally — and 194 by population among all 3144 counties covered here, where 1 is the largest. Douglas County, Colorado is home to about 393,995 people across 840.888 square miles of land.
Checking a specific address in Douglas County
Across all of Douglas County's 111,154 residential structures, 311 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Douglas County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. If you're unsure why any of this insurance requirement exists at all, the SFHA explainer covers it from first principles.