Brown County, IN: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Brown County scores at the 38th percentile for flood hazard, rated "Relatively Low" — below the national norm for flood hazard. 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. 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 Brown County
Out of 438 homes FEMA counts inside Brown County's mapped flood zone, 55 carry the flood policy federal law requires there — 12.6% compliance, short of full coverage. Looking beyond the mandated zone, 0.8% of all residential structures in Brown County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
How Brown County compares nationally
Among the 3144 US counties FEMA scores for flood hazard, Brown County ranks 2013 — 1 being the highest hazard nationally — and 2057 by population among all 3144 counties covered here, where 1 is the largest. About 15,650 people live in Brown County, Indiana, spread over 312 square miles.
Your street may differ from Brown County's average
71 of Brown County's 8,740 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
Where Brown County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. If you're unsure why any of this insurance requirement exists at all, the SFHA explainer covers it from first principles.