How much flood risk does Chickasaw County actually carry?
Chickasaw County lands at the 39.6th 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 1.3 times a year. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Chickasaw County's flood-insurance compliance gap
Out of 170 homes FEMA counts inside Chickasaw County's mapped flood zone, 25 carry the flood policy federal law requires there — 14.7% compliance, short of full coverage. Across all residential structures in Chickasaw County, not just the ones FEMA mandates, 0.6% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Chickasaw County against the rest of the country
Chickasaw County sits at rank 1961 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2300 of 3144 by population (1 is biggest). Chickasaw County, Iowa is home to about 11,719 people across 504.324 square miles of land.
Your street may differ from Chickasaw County's average
Across all of Chickasaw County's 5,220 residential structures, 29 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 Chickasaw 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.