Broomfield County, CO: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Broomfield County scores at the 33.1th 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 14 years. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Broomfield County's flood-insurance compliance gap
FEMA hasn't published a residential structure count for Broomfield 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, 0.3% of all residential structures in Broomfield County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Broomfield County against the rest of the country
Among the 3144 US counties FEMA scores for flood hazard, Broomfield County ranks 2162 — 1 being the highest hazard nationally — and 737 by population among all 3144 counties covered here, where 1 is the largest. Broomfield County, Colorado covers 32.967 square miles and counts roughly 78,323 residents.
Checking a specific address in Broomfield County
FEMA counts 22,290 residential structures in Broomfield County overall, 75 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
Where Broomfield County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Broomfield 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.