Is Dolores County, CO in a flood zone?
FEMA's National Risk Index puts Dolores County's flood hazard at the 8.8th percentile nationally — among the lowest flood hazard in the country — driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about once every 4 years. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Dolores County's flood-insurance compliance gap
Dolores 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 Dolores County, not just the ones FEMA mandates, 0.3% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Dolores County against the rest of the country
Dolores County sits at rank 2883 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2997 of 3144 by population (1 is biggest). Dolores County, Colorado is home to about 2,467 people across 1,067.17 square miles of land.
Your street may differ from Dolores County's average
4 of Dolores County's 1,211 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 Dolores County's numbers. See the data quality guide for why Dolores County, like hundreds of other counties, doesn't get a clean compliance percentage.