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