How much flood risk does Washington Parish actually carry?
Washington Parish lands at the 79th percentile of FEMA's National Risk Index for flooding, "Relatively Moderate" territory — a middling flood hazard by national standards — with the hazard 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
21% of the homes FEMA requires to carry flood insurance in Washington Parish — those inside the mapped Special Flood Hazard Area — actually have a policy in force: 383 policies against 1,821 mandated structures, which means a meaningful share of legally-required coverage simply isn't there. Across all residential structures in Washington Parish, not just the ones FEMA mandates, 2.5% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Where Washington Parish ranks
Washington Parish sits at rank 690 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 1094 of 3144 by population (1 is biggest). Washington Parish, Louisiana covers 669.637 square miles and counts roughly 45,090 residents.
Checking a specific address in Washington Parish
498 of Washington Parish's 19,657 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
More on how this number was built
The methodology guide shows exactly which FEMA and Census tables feed Washington Parish's numbers. The guide to what the Special Flood Hazard Area actually means explains why the mandatory-insurance rule exists and who it applies to.