How much flood risk does Terrell County actually carry?
Terrell County lands at the 3.7th 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 once every 1 years. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Terrell County's flood-insurance compliance gap
Terrell 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 Terrell 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.
Terrell County against the rest of the country
Terrell County sits at rank 3035 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 3124 of 3144 by population (1 is biggest). Terrell County, Texas is home to about 718 people across 2,357.958 square miles of land.
Checking a specific address in Terrell County
2 of Terrell County's 662 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
More on how this number was built
The methodology guide shows exactly which FEMA and Census tables feed Terrell County's numbers. See the data quality guide for why Terrell County, like hundreds of other counties, doesn't get a clean compliance percentage.