Peoria County, IL: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Peoria County scores at the 88.7th percentile for flood hazard, rated "Relatively Moderate" — a middling flood hazard by national standards. 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 1.5 times a year. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Peoria County's flood-insurance compliance gap
FEMA hasn't published a residential structure count for Peoria 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 Peoria County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Where Peoria County ranks
Among the 3144 US counties FEMA scores for flood hazard, Peoria County ranks 373 — 1 being the highest hazard nationally — and 388 by population among all 3144 counties covered here, where 1 is the largest. Peoria County, Illinois covers 618.695 square miles and counts roughly 179,630 residents.
Your street may differ from Peoria County's average
302 of Peoria County's 70,685 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
Where Peoria County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Peoria 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.