How much flood risk does Ulster County actually carry?
Ulster County lands at the 91.9th percentile of FEMA's National Risk Index for flooding, "Relatively Moderate" territory — a middling flood hazard by national standards — with the hazard driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about 3.6 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
Homes with a federally backed mortgage inside Ulster County's mapped high-risk flood zone (the Special Flood Hazard Area, or SFHA) are legally required to carry an NFIP flood policy. In practice, 26.4% of them do — 579 active policies against 2,197 structures FEMA counts in that zone, leaving a real compliance gap. Across all residential structures in Ulster 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.
How Ulster County compares nationally
Ulster County sits at rank 272 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 381 of 3144 by population (1 is biggest). Ulster County, New York covers 1,124.236 square miles and counts roughly 182,977 residents.
Your street may differ from Ulster County's average
FEMA counts 71,024 residential structures in Ulster County overall, 897 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
More on how this number was built
The methodology guide shows exactly which FEMA and Census tables feed Ulster County's numbers. The guide to what the Special Flood Hazard Area actually means explains why the mandatory-insurance rule exists and who it applies to.