Which county in Massachusetts has the lowest flood risk?

Worcester has the lowest flood risk in Massachusetts, at 34.2.

What is the flood risk in Worcester?

Worcester is ranked #1 in Massachusetts for flood risk, at 34.2.

What are the top counties in Massachusetts for flood risk?

Worcester (34.2), then Suffolk (47.4), and Middlesex (48.5). The full top 14 is in the table on this page.

How is this flood risk ranking calculated?

Counties in Massachusetts are ranked by flood risk (FEMA National Risk Index, FEMA NRI v1.20), lowest first. Values describe the county, not an individual property. Source vintage is shown on the page.

How does Massachusetts compare to the rest of the US for flood risk?

This list is Massachusetts only. See the national ranking of the lowest counties for flood risk at hearthmap.app/best/lowest-flood-risk.

Lowest Flood Risk Counties in Massachusetts (2026)

Lowest counties for flood risk in Massachusetts

Top 14 of 14 counties with data.

Ranked by flood risk (FEMA National Risk Index, FEMA NRI v1.20), lowest first.

Lowest counties for flood risk in Massachusetts

Rank	County	Value
01	Worcester34.2 County page
02	Suffolk47.4 County page
03	Middlesex48.5 County page
04	Hampshire50.8 County page
05	Norfolk53.7 County page
06	Bristol55.6 County page
07	Hampden56.1 County page
08	Plymouth60.8 County page
09	Franklin64.9 County page
10	Berkshire73.0 County page
11	Essex73.3 County page
12	Nantucket80.3 County page
13	Barnstable88.1 County page
14	Dukes93.9 County page

How this ranking works

This page ranks Massachusetts counties by flood risk, sorted so the lowest places appear first. Click any county to see its housing, schools, crime, and demographics in detail.

For flood risk, a lower value is generally more favorable, so the top of the list is the lowest. Want to weigh flood risk against schools, taxes, commute, and more at once? Use the live map to build a custom match.

Data comes from public sources. Source attribution and the exact data vintage are shown above and on the full map of flood risk.

Frequently asked questions

Which county in Massachusetts has the lowest flood risk?: Worcester has the lowest flood risk in Massachusetts, at 34.2.
What is the flood risk in Worcester?: Worcester is ranked #1 in Massachusetts for flood risk, at 34.2.
What are the top counties in Massachusetts for flood risk?: Worcester (34.2), then Suffolk (47.4), and Middlesex (48.5). The full top 14 is in the table on this page.
How is this flood risk ranking calculated?: Counties in Massachusetts are ranked by flood risk (FEMA National Risk Index, FEMA NRI v1.20), lowest first. Values describe the county, not an individual property. Source vintage is shown on the page.
How does Massachusetts compare to the rest of the US for flood risk?: This list is Massachusetts only. See the national ranking of the lowest counties for flood risk at hearthmap.app/best/lowest-flood-risk.