How much flood risk does Richardson County actually carry?
Richardson County lands at the 16.7th 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 2.1 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.
Mandatory flood insurance compliance in Richardson County
Richardson County is one of the counties where FEMA's own denominator for mandated flood-zone structures is missing, so no compliance rate is shown rather than a guessed one — the data quality guide covers how common this is. Across all residential structures in Richardson County, not just the ones FEMA mandates, 0.3% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Richardson County against the rest of the country
Richardson County sits at rank 2654 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2598 of 3144 by population (1 is biggest). Richardson County, Nebraska is home to about 7,666 people across 551.841 square miles of land.
Your street may differ from Richardson County's average
Across all of Richardson County's 5,873 residential structures, 16 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 Richardson County's numbers. See the data quality guide for why Richardson County, like hundreds of other counties, doesn't get a clean compliance percentage.