How much flood risk does Dimmit County actually carry?
Dimmit County lands at the 19.4th 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 1.7 times a year. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Dimmit County's flood-insurance compliance gap
Dimmit 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 Dimmit 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.
Where Dimmit County ranks
Dimmit County sits at rank 2576 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2561 of 3144 by population (1 is biggest). Dimmit County, Texas covers 1,328.885 square miles and counts roughly 8,181 residents.
What to do next if you own or are buying in Dimmit County
FEMA counts 3,524 residential structures in Dimmit County overall, 21 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
More on how this number was built
The methodology guide shows exactly which FEMA and Census tables feed Dimmit County's numbers. See the data quality guide for why Dimmit County, like hundreds of other counties, doesn't get a clean compliance percentage.