St. Helena Parish, LA flood risk explained
Flood hazard in St. Helena Parish sits at the 35th national percentile, below the national norm for flood hazard; driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about once every 6 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 St. Helena Parish
16.6% of the homes FEMA requires to carry flood insurance in St. Helena Parish — those inside the mapped Special Flood Hazard Area — actually have a policy in force: 41 policies against 247 mandated structures, which means a meaningful share of legally-required coverage simply isn't there. Looking beyond the mandated zone, 1.5% of all residential structures in St. Helena Parish carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
How St. Helena Parish compares nationally
Among the 3144 US counties FEMA scores for flood hazard, St. Helena Parish ranks 2107 — 1 being the highest hazard nationally — and 2354 by population among all 3144 counties covered here, where 1 is the largest. St. Helena Parish, Louisiana is home to about 10,857 people across 408.527 square miles of land.
What to do next if you own or are buying in St. Helena Parish
Across all of St. Helena Parish's 4,954 residential structures, 73 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where St. Helena Parish'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.