How much flood risk does Door County actually carry?
Door County lands at the 52.1th percentile of FEMA's National Risk Index for flooding, "Relatively Low" territory — below the national norm for flood hazard — with the hazard driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about once every 5 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 Door County
8.7% of the homes FEMA requires to carry flood insurance in Door County — those inside the mapped Special Flood Hazard Area — actually have a policy in force: 81 policies against 928 mandated structures, which means a meaningful share of legally-required coverage simply isn't there. Across all residential structures in Door County, not just the ones FEMA mandates, 0.7% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
How Door County compares nationally
Door County sits at rank 1570 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 1428 of 3144 by population (1 is biggest). Door County, Wisconsin is home to about 30,512 people across 481.936 square miles of land.
What to do next if you own or are buying in Door County
Across all of Door County's 20,850 residential structures, 143 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
More on how this number was built
The methodology guide shows exactly which FEMA and Census tables feed Door County's numbers. The guide to what the Special Flood Hazard Area actually means explains why the mandatory-insurance rule exists and who it applies to.