Trousdale County, TN Flood Zone & Flood Risk Data
Trousdale County, TN flood risk explained
Flood hazard in Trousdale County sits at the 13.4th national percentile, 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. 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 Trousdale County
Out of 99 homes FEMA counts inside Trousdale County's mapped flood zone, 8 carry the flood policy federal law requires there, 8.1% compliance, short of full coverage. Looking beyond the mandated zone, 0.3% of all residential structures in Trousdale County carry flood coverage voluntarily or otherwise, relevant because most NFIP claims nationally come from outside the mapped SFHA.
Where Trousdale County ranks
Among the 3144 US counties FEMA scores for flood hazard, Trousdale County ranks 2750, 1 being the highest hazard nationally, and 2272 by population among all 3144 counties covered here, where 1 is the largest. About 12,159 people live in Trousdale County, Tennessee, spread over 114.342 square miles.
Checking a specific address in Trousdale County
Across all of Trousdale County's 3,851 residential structures, 13 carry an NFIP policy today, a county-wide count that still can't tell you one address's own mapped zone.
Where Trousdale 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.