Atascosa County, TX flood risk explained
Flood hazard in Atascosa County sits at the 61th national percentile, below the national norm for flood hazard; driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about 2.6 times a year. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Mandatory flood insurance compliance in Atascosa County
Out of 1,102 homes FEMA counts inside Atascosa County's mapped flood zone, 97 carry the flood policy federal law requires there — 8.8% compliance, short of full coverage. Looking beyond the mandated zone, 0.7% of all residential structures in Atascosa County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
How Atascosa County compares nationally
Among the 3144 US counties FEMA scores for flood hazard, Atascosa County ranks 1282 — 1 being the highest hazard nationally — and 974 by population among all 3144 counties covered here, where 1 is the largest. About 52,783 people live in Atascosa County, Texas, spread over 1,219.542 square miles.
What to do next if you own or are buying in Atascosa County
FEMA counts 21,391 residential structures in Atascosa County overall, 139 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
Where Atascosa County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. If you're unsure why any of this insurance requirement exists at all, the SFHA explainer covers it from first principles.