Mills County, TX: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Mills County scores at the 11.3th 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 1 years. 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
FEMA hasn't published a residential structure count for Mills 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, 0.1% of all residential structures in Mills County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Where Mills County ranks
Among the 3144 US counties FEMA scores for flood hazard, Mills County ranks 2809 — 1 being the highest hazard nationally — and 2853 by population among all 3144 counties covered here, where 1 is the largest. Mills County, Texas covers 748.225 square miles and counts roughly 4,563 residents.
Checking a specific address in Mills County
FEMA counts 3,020 residential structures in Mills 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 Mills County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Mills 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.