Delaware has about ~24,000 active NFIP flood insurance policies, with an average annual premium of $870/yr under FEMA's Risk Rating 2.0 methodology. The biggest flood risk areas in the state are Sussex County beaches, Delaware Bay coast, Christina River in Wilmington. Private flood market availability: Moderate.
NFIP Policies in Force
~24,000
Estimate, federal flood program
Avg NFIP Premium
$870/yr
Risk Rating 2.0 average
Private Flood Market
Moderate
Carrier availability for higher limits
| Topic | Detail | Notes |
|---|---|---|
| Top risk areas | Sussex County beaches, Delaware Bay coast, Christina River in Wilmington | Mandatory purchase in SFHA + federal mortgage |
| Recent major flood | 2024 coastal nor'easter flooding; Ida remnants flooding (Sept 2021) | Drives claim data and premium revisions |
| Average NFIP premium | $870/yr | Risk Rating 2.0 phased increases (18%/yr cap) |
| CBRS coastal restrictions | Yes — CBRS zones present | NFIP unavailable on undeveloped CBRS barrier areas |
NFIP statistics from FEMA's national insurance data; premium averages reflect Risk Rating 2.0 phase-in. Private flood market sized from state department of insurance filings. Always verify your specific property's flood zone at floodsmart.gov.
Delaware is one of the flattest, lowest-elevation states in the nation, with vast stretches of coastal Sussex County barely above sea level and directly exposed to Delaware Bay and Atlantic Ocean storm surge. The Delaware beaches — Rehoboth, Dewey, Bethany, and Fenwick Island — are among the most heavily developed barrier beach and coastal areas per capita in the mid-Atlantic region. Nor'easters are the dominant flood peril, striking multiple times per winter season and driving surge up Delaware Bay toward Wilmington. The Christina River in Wilmington and New Castle County also creates a riverine flood zone in Delaware's most urbanized corridor. Sea level rise at a rate among the fastest on the East Coast (due to land subsidence) is steadily expanding Delaware's flood exposure.
Delaware has approximately 24,000 NFIP policies — a substantial number for one of the nation's smallest states, reflecting the density of coastal development. Risk Rating 2.0 increased average premiums for many Delaware coastal properties, with the statewide average reaching approximately $870 per year. Coastal Sussex County properties near Rehoboth Beach or Indian River Bay are often among the highest-risk NFIP policies in the state, paying $1,500–$3,000+. CBRS-designated areas exist along Delaware's barrier beaches, meaning federal flood insurance is unavailable on some undeveloped coastal parcels. Private flood carriers are moderately active in Delaware's coastal market. Delaware's standard homeowners policies, like everywhere, exclude flood.
Homeowners and renters policies categorically exclude flood damage. You must purchase a separate flood policy through the National Flood Insurance Program (NFIP) or a private flood insurer. Note: there's a standard 30-day waiting period from purchase to coverage, so don't wait until a storm is forecast.
NFIP residential policies cap building coverage at $250,000 and contents at $100,000. Homes worth more than these limits should consider 'excess flood' coverage through a private insurer or a fully-private flood policy with higher limits.
Major flood event affecting Delaware: 2024 coastal nor'easter flooding; Ida remnants flooding (Sept 2021). Repeated severe events tend to push up local NFIP premiums and shift more properties into mandatory-purchase Special Flood Hazard Areas.
💡 Delaware Pro Tip
Flood insurance is required for federally backed mortgage holders in Delaware's SFHAs, which cover extensive areas of coastal Sussex County, the Delaware Bay shoreline in Kent and New Castle counties, and the Christina River floodplain in Wilmington. Delaware's low topography means a larger-than-average share of the state is within or near mapped floodplains. Even residents of moderate-risk Zone X areas near Delaware's beaches or bayfront should seriously consider coverage, as nor'easters regularly inundate properties that are technically outside the 100-year floodplain.
Delaware's average NFIP premium is approximately $870 per year. Coastal properties in Rehoboth Beach, Bethany Beach, or Fenwick Island in Sussex County typically pay $1,200–$3,500 depending on elevation and proximity to the shoreline. Delaware Bay shoreline properties in lower New Castle and Kent counties generally pay $700–$1,500. Inland properties in Wilmington's flood zones along the Christina River may pay $600–$1,200. Private flood insurance is available in Delaware, particularly for higher-value coastal vacation homes exceeding NFIP limits.
NFIP flood insurance in Delaware covers Atlantic and Delaware Bay storm surge from nor'easters and tropical storms (the primary coastal peril), riverine flooding from the Christina, Brandywine, and other rivers, tidal flooding in low-lying coastal areas, and surface water flooding from heavy rainfall. It does not cover wave damage alone (beyond the flood boundary), storm-driven beach erosion without associated flooding, or sewer and drain backup unless directly caused by a covered flood event. Delaware coastal homeowners should note that NFIP's 30-day waiting period means purchasing coverage after a storm is named is too late.
Data sourced from FEMA NFIP statistics and state Department of Insurance filings for Delaware, April 2026.
Michael Torres
Editorial Lead, Catastrophe & Commercial Property
This article was researched and written by the Cover Forge USA editorial team against federal sources (NAIC, CMS, FEMA, DOL, SSA, state DOIs) and standard policy forms. Bylines organize content by topic — they do not assert individual licensure. See our editorial-policy for details.
Reviewed April 2026
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