San Juan County, CO: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, San Juan County scores at the 4th percentile for flood hazard, rated "Very Low" — among the lowest flood hazard in the country. The hazard here is driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about once every 6 years. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
San Juan County's flood-insurance compliance gap
FEMA hasn't published a residential structure count for San Juan 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, 0.4% of all residential structures in San Juan County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
San Juan County against the rest of the country
Among the 3144 US counties FEMA scores for flood hazard, San Juan County ranks 3025 — 1 being the highest hazard nationally — and 3117 by population among all 3144 counties covered here, where 1 is the largest. San Juan County, Colorado is home to about 821 people across 387.516 square miles of land.
Checking a specific address in San Juan County
FEMA counts 538 residential structures in San Juan County overall, 2 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
Where San Juan County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. San Juan 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.