How much flood risk does Seminole County actually carry?
Seminole County lands at the 38.2th percentile of FEMA's National Risk Index for flooding, "Relatively Low" territory — below the national norm for flood hazard — with the 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. 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
14.2% of the homes FEMA requires to carry flood insurance in Seminole County — those inside the mapped Special Flood Hazard Area — actually have a policy in force: 20 policies against 141 mandated structures, which means a meaningful share of legally-required coverage simply isn't there. Across all residential structures in Seminole County, not just the ones FEMA mandates, 0.3% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Where Seminole County ranks
Seminole County sits at rank 2006 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 1672 of 3144 by population (1 is biggest). Seminole County, Oklahoma is home to about 23,351 people across 632.819 square miles of land.
Checking a specific address in Seminole County
Across all of Seminole County's 10,874 residential structures, 27 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
More on how this number was built
The methodology guide shows exactly which FEMA and Census tables feed Seminole County's numbers. The guide to what the Special Flood Hazard Area actually means explains why the mandatory-insurance rule exists and who it applies to.