FEMA flood zones · statewide

Massachusetts Flood Zone Map

35,348 flood insurance claims·$439.9M paid·56,803 policies in force

Coastal high risk (V, VE)FloodwayHigh risk (A, AE)Moderate (X, 500-year)Minimal (X)Undetermined (D)

Shaded areas are FEMA’s mapped flood hazard zones in and around Massachusetts. Zoomed out they are simplified; at street level the map switches to FEMA’s exact layer. Tap anywhere to check that spot, or search an address above.

Flood Risk in Massachusetts

Massachusetts faces a mixed flood risk profile dominated by frequent inland riverine flooding and significant coastal exposure, with NOAA recording 1,013 floods, 605 flash floods, 372 coastal floods, 105 tropical storms, and 56 storm surge or tide events over the last 30 years resulting in three deaths.

This multi-faceted hazard mix impacts both coastal and interior areas, with recent federal disaster declarations highlighting vulnerabilities to tropical weather, specifically noting Hurricane Lee on September 15, 2023. These events underscore the state's susceptibility to severe coastal impacts alongside widespread inland flooding from heavy precipitation and tropical systems.

Analysis of National Flood Insurance Program claims indicates that residents in FEMA Zone A face the highest risk and need insurance most urgently, accounting for 20,404 claims and $259 million paid out. Significant payouts also occur in coastal Zone V, where 3,491 claims totaled $67 million with the highest average payout of $24,039. Meanwhile, surprise claims happen in moderate-to-low risk areas, demonstrated by 3,394 claims in unshaded Zone X totaling $41 million, 2,510 claims in Zone X totaling $31 million, 1,514 claims in shaded Zone X totaling $20 million, and 4,051 claims in unknown zones totaling $23 million, proving that properties outside high-risk zones still experience costly flooding.

Summary generated from FEMA disaster declarations, NOAA storm events, and NFIP claim data. Updated quarterly.

Massachusetts Flood Statistics

Total NFIP Claims
35,348
Total Claims Paid
$439.9M
Average Claim
$12,444
NFIP Policies in Force (Aug 31, 2026)
56,803
Average NFIP Premium (Aug 31, 2026)
$1,245/yr
Disaster Declarations
414
Peak Claims Year
1991 (7,192 claims)
Latest Disaster
HURRICANE LEE (2023-09-15)

Source: OpenFEMA NFIP Claims, Policies, and Disaster Declarations data. NFIP policies in force and average premium (premium plus federal policy fee) as of August 31, 2026, from OpenFEMA.

Massachusetts Disaster History

Massachusetts has received 414 federal disaster declarations, including 60 flood and coastal storm declarations and 41 hurricane declarations.

Where Massachusetts’s flood claims are

  1. Plymouth County10,959
  2. Essex County5,456
  3. Suffolk County4,369
  4. Middlesex County3,752
  5. Norfolk County3,262
  6. Barnstable County3,184
  7. Bristol County1,558
  8. Worcester County765
  9. Nantucket County602
  10. Berkshire County388

NFIP claims by county, 1978 to date. Source: OpenFEMA. Counties ranked by recorded flood events →

The zones you’ll see on the map

Cross-section of a coastal flood zoneDiagram: land rising away from the shore. The 1%-annual-chance flood surface reaches inland; where storm waves ride on top of it the zone is V or VE, behind that AE, then a band of shaded X, then X on higher ground.0.2% CHANCE A YEAR (500-YEAR)BASE FLOOD ELEVATION · 1% A YEARXX shadedAEVE
  1. VE / V Storm waves of 3 feet or more ride on top of the flood. Strictest building rules; homes go up on pilings.
  2. A / AE Inside the 1%-a-year floodplain: about a 26% chance of flooding over a 30-year mortgage. AE has a mapped base flood elevation; plain A does not.
  3. X shaded The 0.2% (500-year) floodplain, plus some levee-protected and very shallow flood areas.
  4. X Outside both lines. No federal requirement to insure, which is not the same as no risk.

Every flood zone code explained →

Flood Insurance in Massachusetts

Properties in Massachusetts FEMA-designated Special Flood Hazard Areas (zones A and V) with a mortgage from a federally regulated or insured lender, or a federally backed loan, are required to carry flood insurance through the National Flood Insurance Program (NFIP).

Massachusetts had 56,803 NFIP policies in force on August 31, 2026, and the average NFIP premium was $1,245 a year (premium plus the federal policy fee; the reserve fund assessment and HFIAA surcharge come on top, and nationally they make actual bills about a quarter higher). Under FEMA’s Risk Rating 2.0 each building is priced on its own flood risk, so a state average says little about what any one home will pay.

Even outside high-risk zones, flood insurance is recommended. From 2014 to 2024, nearly one-third of NFIP claims came from properties outside the high-risk Special Flood Hazard Area. Massachusetts residents can purchase flood insurance through the NFIP or private insurers.

Visit FloodSmart.gov to find an agent and get a quote.

See the most flood-prone counties in Massachusetts →

Massachusetts Counties (14)

Select a county to view local flood zone data and disaster history:

Massachusetts Cities (119)

Select a city to check flood zone information: