How much flood risk does Union County actually carry?
Union County lands at the 7.1th percentile of FEMA's National Risk Index for flooding, "Very Low" territory — among the lowest flood hazard in the country — with the hazard driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about once every 1 years. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Union County's flood-insurance compliance gap
Union 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 Union County, not just the ones FEMA mandates, 0% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Union County against the rest of the country
Union County sits at rank 2933 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2890 of 3144 by population (1 is biggest). About 3,926 people live in Union County, New Mexico, spread over 3,825.05 square miles.
Checking a specific address in Union County
0 of Union County's 2,057 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 Union County's numbers. See the data quality guide for why Union County, like hundreds of other counties, doesn't get a clean compliance percentage.