Champaign County, IL flood risk explained
Flood hazard in Champaign County sits at the 90.4th national percentile, 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 1.8 times a year. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Champaign County's flood-insurance compliance gap
16.9% of the homes FEMA requires to carry flood insurance in Champaign County — those inside the mapped Special Flood Hazard Area — actually have a policy in force: 78 policies against 462 mandated structures, which means a meaningful share of legally-required coverage simply isn't there. Looking beyond the mandated zone, 0.3% of all residential structures in Champaign County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Champaign County against the rest of the country
Among the 3144 US counties FEMA scores for flood hazard, Champaign County ranks 319 — 1 being the highest hazard nationally — and 333 by population among all 3144 counties covered here, where 1 is the largest. About 212,374 people live in Champaign County, Illinois, spread over 996.104 square miles.
What to do next if you own or are buying in Champaign County
Across all of Champaign County's 56,324 residential structures, 157 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Champaign 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.