Union County, GA: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Union County scores at the 58.7th 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 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 Union County
Out of 785 homes FEMA counts inside Union County's mapped flood zone, 107 carry the flood policy federal law requires there — 13.6% compliance, short of full coverage. Looking beyond the mandated zone, 0.9% of all residential structures in Union County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Where Union County ranks
Among the 3144 US counties FEMA scores for flood hazard, Union County ranks 1358 — 1 being the highest hazard nationally — and 1519 by population among all 3144 counties covered here, where 1 is the largest. About 27,601 people live in Union County, Georgia, spread over 323.592 square miles.
Your street may differ from Union County's average
Across all of Union County's 15,182 residential structures, 134 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Union 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.