Jackson County, WI flood risk explained
Flood hazard in Jackson County sits at the 54.7th 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 1.8 times a year. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Who actually carries the flood insurance FEMA requires
Out of 172 homes FEMA counts inside Jackson County's mapped flood zone, 18 carry the flood policy federal law requires there — 10.5% compliance, short of full coverage. Looking beyond the mandated zone, 0.4% of all residential structures in Jackson County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Jackson County against the rest of the country
Among the 3144 US counties FEMA scores for flood hazard, Jackson County ranks 1489 — 1 being the highest hazard nationally — and 1770 by population among all 3144 counties covered here, where 1 is the largest. Jackson County, Wisconsin is home to about 21,027 people across 987.915 square miles of land.
Your street may differ from Jackson County's average
Across all of Jackson County's 8,919 residential structures, 34 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Jackson 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.