Greer County, OK flood risk explained
Flood hazard in Greer County sits at the 5.9th national percentile, among the lowest flood hazard in the country; 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.
Who actually carries the flood insurance FEMA requires
Homes with a federally backed mortgage inside Greer 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, 6.4% of them do — 3 active policies against 47 structures FEMA counts in that zone, leaving a real compliance gap. Looking beyond the mandated zone, 0.1% of all residential structures in Greer County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Where Greer County ranks
Among the 3144 US counties FEMA scores for flood hazard, Greer County ranks 2967 — 1 being the highest hazard nationally — and 2784 by population among all 3144 counties covered here, where 1 is the largest. Greer County, Oklahoma is home to about 5,433 people across 639.285 square miles of land.
Your street may differ from Greer County's average
4 of Greer County's 2,822 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
Where Greer 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.