Is Carson County, TX in a flood zone?
FEMA's National Risk Index puts Carson County's flood hazard at the 3.6th 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 2 years. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Who actually carries the flood insurance FEMA requires
Carson 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 Carson 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.
Where Carson County ranks
Carson County sits at rank 3036 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2747 of 3144 by population (1 is biggest). Carson County, Texas is home to about 5,822 people across 920.235 square miles of land.
What to do next if you own or are buying in Carson County
9 of Carson County's 2,974 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 Carson County's numbers. See the data quality guide for why Carson County, like hundreds of other counties, doesn't get a clean compliance percentage.