Is Calaveras County, CA in a flood zone?
FEMA's National Risk Index puts Calaveras County's flood hazard at the 77.6th percentile nationally — a middling flood hazard by national standards — 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. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Mandatory flood insurance compliance in Calaveras County
Homes with a federally backed mortgage inside Calaveras County's mapped high-risk flood zone (the Special Flood Hazard Area, or SFHA) are legally required to carry an NFIP flood policy. In practice, 36.6% of them do — 63 active policies against 172 structures FEMA counts in that zone, leaving a real compliance gap. Across all residential structures in Calaveras County, not just the ones FEMA mandates, 0.4% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Where Calaveras County ranks
Calaveras County sits at rank 733 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 1058 of 3144 by population (1 is biggest). Calaveras County, California is home to about 46,505 people across 1,020.016 square miles of land.
What to do next if you own or are buying in Calaveras County
FEMA counts 24,705 residential structures in Calaveras County overall, 108 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 Calaveras 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.