How much flood risk does Nuckolls County actually carry?
Nuckolls County lands at the 10.6th percentile of FEMA's National Risk Index for flooding, "Very Low" territory — among the lowest flood hazard in the country — 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 3 years. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Mandatory flood insurance compliance in Nuckolls County
Out of 123 homes FEMA counts inside Nuckolls County's mapped flood zone, 3 carry the flood policy federal law requires there — 2.4% compliance, short of full coverage. Across all residential structures in Nuckolls 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.
How Nuckolls County compares nationally
Nuckolls County sits at rank 2830 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2876 of 3144 by population (1 is biggest). Nuckolls County, Nebraska is home to about 4,094 people across 575.155 square miles of land.
Checking a specific address in Nuckolls County
Across all of Nuckolls County's 3,868 residential structures, 6 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 Nuckolls 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.