How much flood risk does Giles County actually carry?
Giles County lands at the 60.8th percentile of FEMA's National Risk Index for flooding, "Relatively Low" territory — below the national norm for flood hazard — with the hazard driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about 1.4 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.
Giles County's flood-insurance compliance gap
13.9% of the homes FEMA requires to carry flood insurance in Giles County — those inside the mapped Special Flood Hazard Area — actually have a policy in force: 70 policies against 504 mandated structures, which means a meaningful share of legally-required coverage simply isn't there. Across all residential structures in Giles County, not just the ones FEMA mandates, 0.7% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Giles County against the rest of the country
Giles County sits at rank 1291 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 1414 of 3144 by population (1 is biggest). About 30,971 people live in Giles County, Tennessee, spread over 610.931 square miles.
What to do next if you own or are buying in Giles County
Across all of Giles County's 15,015 residential structures, 103 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 Giles County's numbers. The guide to what the Special Flood Hazard Area actually means explains why the mandatory-insurance rule exists and who it applies to.