Osage County, MO flood risk explained
Flood hazard in Osage County sits at the 47.5th 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 1.4 times a year. 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
Out of 392 homes FEMA counts inside Osage County's mapped flood zone, 30 carry the flood policy federal law requires there — 7.7% compliance, short of full coverage. Looking beyond the mandated zone, 0.4% of all residential structures in Osage County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Osage County against the rest of the country
Among the 3144 US counties FEMA scores for flood hazard, Osage County ranks 1713 — 1 being the highest hazard nationally — and 2190 by population among all 3144 counties covered here, where 1 is the largest. Osage County, Missouri is home to about 13,478 people across 606.58 square miles of land.
What to do next if you own or are buying in Osage County
FEMA counts 8,326 residential structures in Osage County overall, 34 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
Where Osage 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.