Chautauqua County, NY flood risk explained
Flood hazard in Chautauqua County sits at the 91.3th 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 2.7 times a year. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Mandatory flood insurance compliance in Chautauqua County
FEMA hasn't published a residential structure count for Chautauqua 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, 0.6% of all residential structures in Chautauqua County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Where Chautauqua County ranks
Among the 3144 US counties FEMA scores for flood hazard, Chautauqua County ranks 293 — 1 being the highest hazard nationally — and 523 by population among all 3144 counties covered here, where 1 is the largest. Chautauqua County, New York covers 1,060.41 square miles and counts roughly 124,105 residents.
Your street may differ from Chautauqua County's average
Across all of Chautauqua County's 59,141 residential structures, 365 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Chautauqua County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Chautauqua 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.