Flood zone · Delaware
Flood zone in Delaware
Flood zone (FEMA NFHL) data for ZIP codes in Delaware. Pick a ZIP below to dive into the flood zone summary.
Last verified 2026-09-24 · methodology
What lands here
Not on zipradar yet. The plan is the FEMA flood zone code, what it means in plain English, and the base flood elevation where assigned. Until then, look the address up on FEMA's Flood Map Service Center.
Source & refresh
FEMA NFHL. Refreshed quarterly loma updates. Primary source →
Delaware top concern
Sea-level rise, agricultural runoff
Delaware has the lowest mean elevation of any US state and FEMA NFHL coverage extends well inland in Sussex County. Agricultural runoff in poultry-heavy regions affects EPA SDWIS small-system nitrate readings. Lead-service-line inventories statewide are nearing 2024 LCRR baseline.
See Delaware state page for the full state-level rollup across all 12 dimensions.
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