Is Adams County, WI in a flood zone?
FEMA's National Risk Index puts Adams County's flood hazard at the 72.5th percentile nationally — 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 once every 2 years. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Adams County's flood-insurance compliance gap
2.7% of the homes FEMA requires to carry flood insurance in Adams County — those inside the mapped Special Flood Hazard Area — actually have a policy in force: 18 policies against 664 mandated structures, which means a meaningful share of legally-required coverage simply isn't there. Across all residential structures in Adams County, not just the ones FEMA mandates, 0.2% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Adams County against the rest of the country
Adams County sits at rank 906 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 1755 of 3144 by population (1 is biggest). Adams County, Wisconsin covers 645.646 square miles and counts roughly 21,352 residents.
Your street may differ from Adams County's average
Across all of Adams County's 16,976 residential structures, 34 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 Adams 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.