Is Louisa County, VA in a flood zone?
FEMA's National Risk Index puts Louisa County's flood hazard at the 38.5th percentile nationally — 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 2 years. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Who actually carries the flood insurance FEMA requires
0% of the homes FEMA requires to carry flood insurance in Louisa County — those inside the mapped Special Flood Hazard Area — actually have a policy in force: 0 policies against 40 mandated structures, which means a meaningful share of legally-required coverage simply isn't there. Across all residential structures in Louisa County, not just the ones FEMA mandates, 0% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
How Louisa County compares nationally
Louisa County sits at rank 1995 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 1148 of 3144 by population (1 is biggest). Louisa County, Virginia covers 495.064 square miles and counts roughly 42,109 residents.
What to do next if you own or are buying in Louisa County
FEMA counts 18,710 residential structures in Louisa County overall, 1 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
More on how this number was built
The methodology guide shows exactly which FEMA and Census tables feed Louisa County'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.