Is Sherman County, TX in a flood zone?
FEMA's National Risk Index puts Sherman County's flood hazard at the 1.1th percentile nationally — among the lowest flood hazard in the country — driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about once every 14 years. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Sherman County's flood-insurance compliance gap
Sherman 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 Sherman 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 Sherman County ranks
Sherman County sits at rank 3112 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2976 of 3144 by population (1 is biggest). About 2,771 people live in Sherman County, Texas, spread over 922.86 square miles.
Your street may differ from Sherman County's average
Across all of Sherman County's 827 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 Sherman County's numbers. See the data quality guide for why Sherman County, like hundreds of other counties, doesn't get a clean compliance percentage.