Irion County, TX: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Irion County scores at the 2.9th 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.
Mandatory flood insurance compliance in Irion County
FEMA hasn't published a residential structure count for Irion 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, 0.7% of all residential structures in Irion County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Irion County against the rest of the country
Among the 3144 US counties FEMA scores for flood hazard, Irion County ranks 3060 — 1 being the highest hazard nationally — and 3078 by population among all 3144 counties covered here, where 1 is the largest. Irion County, Texas covers 1,051.544 square miles and counts roughly 1,526 residents.
Your street may differ from Irion County's average
FEMA counts 769 residential structures in Irion County overall, 5 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
Where Irion County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Irion 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.