How much flood risk does Delta County actually carry?
Delta County lands at the 6.4th 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 2 years. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Mandatory flood insurance compliance in Delta County
Delta 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 Delta County, not just the ones FEMA mandates, 0% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Where Delta County ranks
Delta County sits at rank 2953 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2764 of 3144 by population (1 is biggest). Delta County, Texas is home to about 5,647 people across 256.832 square miles of land.
Your street may differ from Delta County's average
Across all of Delta County's 2,412 residential structures, 0 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 Delta County's numbers. See the data quality guide for why Delta County, like hundreds of other counties, doesn't get a clean compliance percentage.