Rockdale County, GA: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Rockdale County scores at the 63.4th percentile for flood hazard, rated "Relatively Low" — below the national norm for flood hazard. The hazard here is 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. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Who actually carries the flood insurance FEMA requires
52.9% of the homes FEMA requires to carry flood insurance in Rockdale County — those inside the mapped Special Flood Hazard Area — actually have a policy in force: 27 policies against 51 mandated structures, which means a meaningful share of legally-required coverage simply isn't there. Looking beyond the mandated zone, 0.3% of all residential structures in Rockdale County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Rockdale County against the rest of the country
Among the 3144 US counties FEMA scores for flood hazard, Rockdale County ranks 1201 — 1 being the highest hazard nationally — and 637 by population among all 3144 counties covered here, where 1 is the largest. About 97,610 people live in Rockdale County, Georgia, spread over 129.819 square miles.
Your street may differ from Rockdale County's average
93 of Rockdale County's 30,106 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
Where Rockdale 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.