Prince George's County, MD flood risk explained
Flood hazard in Prince George's County sits at the 94.6th national percentile, 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 4.2 times a year. 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
FEMA's own figures for Prince George's County report more NFIP policies in the mapped flood zone than FEMA's own count of residential structures there, which produces a compliance rate over 100% — a data problem on FEMA's side, not evidence that everyone here is over-insured. See the data quality guide for how widespread this is. Looking beyond the mandated zone, 0.9% of all residential structures in Prince George's County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Where Prince George's County ranks
Among the 3144 US counties FEMA scores for flood hazard, Prince George's County ranks 183 — 1 being the highest hazard nationally — and 56 by population among all 3144 counties covered here, where 1 is the largest. Prince George's County, Maryland is home to about 966,629 people across 482.601 square miles of land.
Checking a specific address in Prince George's County
2,249 of Prince George's County's 256,880 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
Where Prince George's County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Prince George's County's compliance figure is one of the ones affected by FEMA's incomplete denominator data — the data quality guide explains what that means and how many counties it touches.