Is Berks County, PA in a flood zone?
FEMA's National Risk Index puts Berks County's flood hazard at the 94.8th percentile nationally — well above 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 4.8 times a year. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Berks County's flood-insurance compliance gap
33.6% of the homes FEMA requires to carry flood insurance in Berks County — those inside the mapped Special Flood Hazard Area — actually have a policy in force: 485 policies against 1,445 mandated structures, which means a meaningful share of legally-required coverage simply isn't there. Across all residential structures in Berks County, not just the ones FEMA mandates, 0.5% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
How Berks County compares nationally
Berks County sits at rank 176 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 169 of 3144 by population (1 is biggest). Berks County, Pennsylvania covers 856.404 square miles and counts roughly 439,117 residents.
Checking a specific address in Berks County
684 of Berks County's 141,142 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 Berks 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.