Somerset County, MD flood risk explained
Flood hazard in Somerset County sits at the 93.2th national percentile, well above the national norm for flood hazard; driven by coastal storm surge rather than inland rivers — FEMA's model puts a surge event here at about 3.7 times a year. 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
Homes with a federally backed mortgage inside Somerset 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, 33.8% of them do — 1,578 active policies against 4,667 structures FEMA counts in that zone, leaving a real compliance gap. Looking beyond the mandated zone, 15.9% of all residential structures in Somerset County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Somerset County against the rest of the country
Among the 3144 US counties FEMA scores for flood hazard, Somerset County ranks 232 — 1 being the highest hazard nationally — and 1616 by population among all 3144 counties covered here, where 1 is the largest. About 25,241 people live in Somerset County, Maryland, spread over 319.749 square miles.
Checking a specific address in Somerset County
FEMA counts 10,387 residential structures in Somerset County overall, 1,649 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
Where Somerset County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Somerset County's coastal exposure is covered in the coastal vs. inland flood risk guide, including how storm surge risk differs from river flooding.