How much flood risk does Chemung County actually carry?
Chemung County lands at the 72.2th percentile of FEMA's National Risk Index for flooding, "Relatively Low" territory — below the national norm for flood hazard — with the 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. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Chemung County's flood-insurance compliance gap
Chemung County is one of the counties where FEMA's own denominator for mandated flood-zone structures is missing, so no compliance rate is shown rather than a guessed one — the data quality guide covers how common this is. Across all residential structures in Chemung County, not just the ones FEMA mandates, 1.3% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Where Chemung County ranks
Chemung County sits at rank 912 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 719 of 3144 by population (1 is biggest). Chemung County, New York is home to about 81,115 people across 407.334 square miles of land.
Checking a specific address in Chemung County
415 of Chemung County's 32,437 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
More on how this number was built
The methodology guide shows exactly which FEMA and Census tables feed Chemung County's numbers. See the data quality guide for why Chemung County, like hundreds of other counties, doesn't get a clean compliance percentage.