La Crosse County, WI flood risk explained
Flood hazard in La Crosse County sits at the 74th 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 2.3 times a year. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
La Crosse County's flood-insurance compliance gap
Homes with a federally backed mortgage inside La Crosse 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, 31.4% of them do — 300 active policies against 956 structures FEMA counts in that zone, leaving a real compliance gap. Looking beyond the mandated zone, 1.2% of all residential structures in La Crosse County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
How La Crosse County compares nationally
Among the 3144 US counties FEMA scores for flood hazard, La Crosse County ranks 856 — 1 being the highest hazard nationally — and 531 by population among all 3144 counties covered here, where 1 is the largest. La Crosse County, Wisconsin is home to about 121,060 people across 451.806 square miles of land.
Your street may differ from La Crosse County's average
Across all of La Crosse County's 34,258 residential structures, 408 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where La Crosse 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.