Is Cleveland County, OK in a flood zone?
FEMA's National Risk Index puts Cleveland County's flood hazard at the 88.2th percentile nationally — a middling flood hazard by national standards — driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about 1.6 times a year. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Mandatory flood insurance compliance in Cleveland County
17.5% of the homes FEMA requires to carry flood insurance in Cleveland County — those inside the mapped Special Flood Hazard Area — actually have a policy in force: 275 policies against 1,574 mandated structures, which means a meaningful share of legally-required coverage simply isn't there. Across all residential structures in Cleveland County, not just the ones FEMA mandates, 0.6% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
How Cleveland County compares nationally
Cleveland County sits at rank 388 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 241 of 3144 by population (1 is biggest). About 303,952 people live in Cleveland County, Oklahoma, spread over 538.909 square miles.
What to do next if you own or are buying in Cleveland County
Across all of Cleveland County's 96,074 residential structures, 609 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 Cleveland 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.