Thomas County, NE: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Thomas County scores at the 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 9 years. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Mandatory flood insurance compliance in Thomas County
FEMA hasn't published a residential structure count for Thomas 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% of all residential structures in Thomas County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Where Thomas County ranks
Among the 3144 US counties FEMA scores for flood hazard, Thomas County ranks 3118 — 1 being the highest hazard nationally — and 3132 by population among all 3144 counties covered here, where 1 is the largest. Thomas County, Nebraska is home to about 634 people across 712.554 square miles of land.
Checking a specific address in Thomas County
0 of Thomas County's 581 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
Where Thomas County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Thomas 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.