Harris County, GA flood risk explained
Flood hazard in Harris County sits at the 39.7th national percentile, 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 2 years. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Who actually carries the flood insurance FEMA requires
Homes with a federally backed mortgage inside Harris County's mapped high-risk flood zone (the Special Flood Hazard Area, or SFHA) are legally required to carry an NFIP flood policy. In practice, 22.2% of them do — 33 active policies against 149 structures FEMA counts in that zone, leaving a real compliance gap. Looking beyond the mandated zone, 0.5% of all residential structures in Harris County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Where Harris County ranks
Among the 3144 US counties FEMA scores for flood hazard, Harris County ranks 1958 — 1 being the highest hazard nationally — and 1265 by population among all 3144 counties covered here, where 1 is the largest. Harris County, Georgia is home to about 36,929 people across 463.825 square miles of land.
Your street may differ from Harris County's average
Across all of Harris County's 14,568 residential structures, 78 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Harris 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.