Which county in Maryland has the lowest flood risk?

Montgomery has the lowest flood risk in Maryland, at 19.5.

What is the flood risk in Montgomery?

Montgomery is ranked #1 in Maryland for flood risk, at 19.5.

What are the top counties in Maryland for flood risk?

Montgomery (19.5), then Prince George's (28.0), and Baltimore (28.3). The full top 24 is in the table on this page.

How is this flood risk ranking calculated?

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

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

Lowest Flood Risk Counties in Maryland (2026)

Lowest counties for flood risk in Maryland

Top 24 of 24 counties with data.

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

Lowest counties for flood risk in Maryland

Rank	County	Value
01	Montgomery19.5 County page
02	Prince George's28.0 County page
03	Baltimore28.3
04	Carroll32.1 County page
05	Howard32.3 County page
06	Baltimore33.2 County page
07	Frederick33.4 County page
08	Washington36.0 County page
09	Charles38.7 County page
10	Garrett41.4 County page
11	Allegany46.2 County page
12	Harford49.1 County page
13	Anne Arundel51.5 County page
14	Wicomico58.5 County page
15	St. Mary's68.8 County page
16	Cecil68.8 County page
17	Calvert80.7 County page
18	Caroline81.7 County page
19	Talbot89.3 County page
20	Queen Anne's89.3 County page
21	Dorchester91.2 County page
22	Worcester93.5 County page
23	Kent93.7 County page
24	Somerset94.7 County page

How this ranking works

This page ranks Maryland 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 Maryland has the lowest flood risk?: Montgomery has the lowest flood risk in Maryland, at 19.5.
What is the flood risk in Montgomery?: Montgomery is ranked #1 in Maryland for flood risk, at 19.5.
What are the top counties in Maryland for flood risk?: Montgomery (19.5), then Prince George's (28.0), and Baltimore (28.3). The full top 24 is in the table on this page.
How is this flood risk ranking calculated?: Counties in Maryland 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 Maryland compare to the rest of the US for flood risk?: This list is Maryland only. See the national ranking of the lowest counties for flood risk at hearthmap.app/best/lowest-flood-risk.