Which county in New Jersey has the lowest flood risk?

Sussex has the lowest flood risk in New Jersey, at 40.8.

What is the flood risk in Sussex?

Sussex is ranked #1 in New Jersey for flood risk, at 40.8.

What are the top counties in New Jersey for flood risk?

Sussex (40.8), then Cumberland (55.7), and Gloucester (56.3). The full top 21 is in the table on this page.

How is this flood risk ranking calculated?

Counties in New Jersey 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 New Jersey compare to the rest of the US for flood risk?

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

Lowest Flood Risk Counties in New Jersey (2026)

Lowest counties for flood risk in New Jersey

Top 21 of 21 counties with data.

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

Lowest counties for flood risk in New Jersey

Rank	County	Value
01	Sussex40.8 County page
02	Cumberland55.7 County page
03	Gloucester56.3 County page
04	Essex56.5 County page
05	Camden57.9 County page
06	Passaic63.7 County page
07	Hudson67.3 County page
08	Ocean67.6 County page
09	Burlington67.6 County page
10	Morris69.2 County page
11	Union69.7 County page
12	Monmouth71.2 County page
13	Bergen71.6 County page
14	Middlesex73.3 County page
15	Atlantic75.4 County page
16	Hunterdon75.8 County page
17	Mercer79.1 County page
18	Somerset80.9 County page
19	Warren82.1 County page
20	Salem84.9 County page
21	Cape May94.6 County page

How this ranking works

This page ranks New Jersey 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 New Jersey has the lowest flood risk?: Sussex has the lowest flood risk in New Jersey, at 40.8.
What is the flood risk in Sussex?: Sussex is ranked #1 in New Jersey for flood risk, at 40.8.
What are the top counties in New Jersey for flood risk?: Sussex (40.8), then Cumberland (55.7), and Gloucester (56.3). The full top 21 is in the table on this page.
How is this flood risk ranking calculated?: Counties in New Jersey 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 New Jersey compare to the rest of the US for flood risk?: This list is New Jersey only. See the national ranking of the lowest counties for flood risk at hearthmap.app/best/lowest-flood-risk.