Is Tattnall County, GA in a flood zone?
FEMA's National Risk Index puts Tattnall County's flood hazard at the 37.8th percentile nationally — 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 once every 3 years. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Tattnall County's flood-insurance compliance gap
13.6% of the homes FEMA requires to carry flood insurance in Tattnall County — those inside the mapped Special Flood Hazard Area — actually have a policy in force: 31 policies against 228 mandated structures, which means a meaningful share of legally-required coverage simply isn't there. Across all residential structures in Tattnall County, not just the ones FEMA mandates, 0.4% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
How Tattnall County compares nationally
Tattnall County sits at rank 2022 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 1641 of 3144 by population (1 is biggest). About 24,275 people live in Tattnall County, Georgia, spread over 480.84 square miles.
Checking a specific address in Tattnall County
FEMA counts 9,919 residential structures in Tattnall County overall, 38 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
More on how this number was built
The methodology guide shows exactly which FEMA and Census tables feed Tattnall 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.