Knox County, IN: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Knox County scores at the 53.4th percentile for flood hazard, rated "Relatively Low" — below the national norm for flood hazard. 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 5.2 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
FEMA hasn't published a residential structure count for Knox County's mapped flood zone, so a reliable mandatory-compliance percentage can't be computed here — see the data quality guide for why this gap exists for roughly a quarter of US counties. Looking beyond the mandated zone, 0.4% of all residential structures in Knox County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Knox County against the rest of the country
Among the 3144 US counties FEMA scores for flood hazard, Knox County ranks 1526 — 1 being the highest hazard nationally — and 1295 by population among all 3144 counties covered here, where 1 is the largest. About 35,872 people live in Knox County, Indiana, spread over 515.831 square miles.
Your street may differ from Knox County's average
Across all of Knox County's 15,970 residential structures, 59 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Knox County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Knox County's compliance figure is one of the ones affected by FEMA's incomplete denominator data — the data quality guide explains what that means and how many counties it touches.