Jackson County, OK: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Jackson County scores at the 25.1th percentile for flood hazard, rated "Very Low" — among the lowest flood hazard in the country. 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 1 years. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Mandatory flood insurance compliance in Jackson County
9.2% of the homes FEMA requires to carry flood insurance in Jackson County — those inside the mapped Special Flood Hazard Area — actually have a policy in force: 17 policies against 185 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 Jackson County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
How Jackson County compares nationally
Among the 3144 US counties FEMA scores for flood hazard, Jackson County ranks 2398 — 1 being the highest hazard nationally — and 1634 by population among all 3144 counties covered here, where 1 is the largest. Jackson County, Oklahoma covers 802.653 square miles and counts roughly 24,541 residents.
Checking a specific address in Jackson County
Across all of Jackson County's 11,058 residential structures, 31 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Jackson 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.