Flood Risk by County in Massachusetts

Massachusetts: 14 counties covered

Across 14 Massachusetts counties with a FEMA flood score, the average national percentile is 87.8, but that average hides real spread between counties, which is why each one gets its own page rather than a single statewide number.

• Middlesex County, 98.5th percentile, Relatively High
• Worcester County, 95.3th percentile, Relatively High
• Essex County, 97.8th percentile, Very High
• Suffolk County, 94.7th percentile, Relatively High
• Norfolk County, 95.5th percentile, Relatively High
• Bristol County, 93.6th percentile, Relatively High
• Plymouth County, 94.4th percentile, Very High
• Hampden County, 95.9th percentile, Relatively High
• Barnstable County, 94.6th percentile, Very High
• Hampshire County, 79.4th percentile, Relatively Moderate
• Berkshire County, 90.6th percentile, Relatively Moderate
• Franklin County, 73.5th percentile, Relatively Moderate
• Dukes County, 55.4th percentile, Relatively Low
• Nantucket County, 70th percentile, Relatively Moderate