Shelby County, TX flood risk explained
Flood hazard in Shelby County sits at the 45.1th 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 1.2 times a year. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Mandatory flood insurance compliance in Shelby County
FEMA hasn't published a residential structure count for Shelby County's mapped flood zone, so a reliable mandatory-compliance percentage can't be computed here — see the data quality guide for why this gap exists for roughly a quarter of US counties. Looking beyond the mandated zone, 0.2% of all residential structures in Shelby County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Where Shelby County ranks
Among the 3144 US counties FEMA scores for flood hazard, Shelby County ranks 1786 — 1 being the highest hazard nationally — and 1644 by population among all 3144 counties covered here, where 1 is the largest. Shelby County, Texas covers 795.589 square miles and counts roughly 24,192 residents.
Checking a specific address in Shelby County
Across all of Shelby County's 9,564 residential structures, 23 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Shelby County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Shelby County's compliance figure is one of the ones affected by FEMA's incomplete denominator data — the data quality guide explains what that means and how many counties it touches.