Leavenworth County, KS: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Leavenworth County scores at the 61.8th percentile for flood hazard, rated "Relatively Low" — below the national norm for flood hazard. 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 3.7 times a year. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Leavenworth County's flood-insurance compliance gap
Homes with a federally backed mortgage inside Leavenworth County's mapped high-risk flood zone (the Special Flood Hazard Area, or SFHA) are legally required to carry an NFIP flood policy. In practice, 25.6% of them do — 58 active policies against 227 structures FEMA counts in that zone, leaving a real compliance gap. Looking beyond the mandated zone, 0.5% of all residential structures in Leavenworth County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Where Leavenworth County ranks
Among the 3144 US counties FEMA scores for flood hazard, Leavenworth County ranks 1253 — 1 being the highest hazard nationally — and 692 by population among all 3144 counties covered here, where 1 is the largest. Leavenworth County, Kansas is home to about 84,670 people across 463.409 square miles of land.
Your street may differ from Leavenworth County's average
Across all of Leavenworth County's 27,322 residential structures, 130 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Leavenworth 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.