Douglas County, KS flood risk explained
Flood hazard in Douglas County sits at the 72.8th national percentile, below the national norm for flood hazard; driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about 2 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 321 homes FEMA counts inside Douglas County's mapped flood zone, 118 carry the flood policy federal law requires there — 36.8% compliance, short of full coverage. Looking beyond the mandated zone, 0.7% 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 893 — 1 being the highest hazard nationally — and 529 by population among all 3144 counties covered here, where 1 is the largest. Douglas County, Kansas is home to about 121,989 people across 455.765 square miles of land.
What to do next if you own or are buying in Douglas County
260 of Douglas County's 36,158 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
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.