FEMA NRI 1.19.0Updated Nov 2023 · Coverage 2014–2023Methodology

Maryland Disaster Risk

Natural disaster risk data for all 24 counties.

Avg FEMA Rating

Relatively Low

Avg Percentile

60th

Counties with Data

of 24 total

County risk atlas

Maryland hazard exposure by county

A compact 2.5D surface of FEMA National Risk Index percentiles. Toggle composite, flood, wildfire, hurricane, tornado, and earthquake risk to see which counties carry the highest relative exposure without loading the full national explorer dataset.

Counties

24/24

Avg composite

60th

Risk layers

Highest Risk Counties

Baltimore city

Relatively High

95th percentile

Baltimore County

Relatively Moderate

94th percentile

Prince George's County

Relatively Moderate

93th percentile

Montgomery County

Relatively Moderate

92th percentile

Anne Arundel County

Relatively Moderate

82th percentile

Lowest Risk Counties

Garrett County

Very Low

16th percentile

Kent County

Very Low

28th percentile

Calvert County

Very Low

29th percentile

Queen Anne's County

Very Low

36th percentile

Talbot County

Very Low

42th percentile

All Maryland Counties

County	Percentile	FEMA Rating	Flood	Wildfire	Tornado	Earthquake
Baltimore city	95th	Relatively High	94.3	24.0	95.4	93.0
Baltimore County	94th	Relatively Moderate	93.9	39.5	80.4	92.4
Prince George's County	93th	Relatively Moderate	94.6	42.3	95.1	93.2
Montgomery County	92th	Relatively Moderate	93.7	25.1	78.7	91.8
Anne Arundel County	82th	Relatively Moderate	80.9	35.9	82.0	83.2
Frederick County	74th	Relatively Low	81.6	27.6	67.2	74.6
Harford County	72th	Relatively Low	78.4	19.0	35.7	76.1
Howard County	72th	Relatively Low	78.1	15.6	42.2	77.5
Washington County	69th	Relatively Low	73.1	38.2	62.0	76.5
Worcester County	68th	Relatively Low	88.0	65.9	16.1	49.7
Wicomico County	61th	Relatively Low	57.8	80.9	33.7	60.4
Somerset County	60th	Relatively Low	93.2	85.8	16.9	38.3
Carroll County	60th	Relatively Low	66.7	14.0	36.4	67.6
Cecil County	59th	Relatively Low	60.8	25.3	48.6	70.7
Allegany County	59th	Relatively Low	73.6	21.0	35.8	52.9
Dorchester County	54th	Relatively Low	91.2	83.2	31.0	53.4
Caroline County	46th	Relatively Low	53.4	63.7	24.1	52.8
Charles County	44th	Relatively Low	52.4	19.2	29.2	68.3
St. Mary's County	43th	Very Low	63.0	59.0	39.4	57.2
Talbot County	42th	Very Low	70.6	71.2	31.6	58.5
Queen Anne's County	36th	Very Low	67.2	59.6	33.2	54.3
Calvert County	29th	Very Low	59.4	52.6	17.3	50.1
Kent County	28th	Very Low	60.0	25.4	23.5	52.0
Garrett County	16th	Very Low	34.7	31.9	21.2	32.4

Frequently Asked Questions

Which county in Maryland has the highest natural disaster risk?

Baltimore city has the highest natural disaster risk in Maryland, rated Relatively High (95th percentile nationally), based on FEMA National Risk Index data.

Which county in Maryland is the safest from natural disasters?

Garrett County has the lowest natural disaster risk in Maryland, rated Very Low (16th percentile nationally), based on FEMA NRI data.

What natural disasters are most common in Maryland?

Maryland counties face varying levels of risk from floods, wildfires, tornadoes, earthquakes, and hurricanes. The FEMA National Risk Index scores each county across 18 hazard types. See individual county pages for detailed hazard breakdowns.

How is natural disaster risk measured by county?

The FEMA National Risk Index (NRI) measures natural disaster risk using expected annual loss, social vulnerability, and community resilience. Scores are normalized nationally, with ratings from Very Low to Very High across 18 natural hazard types.

Prepare your household for natural disasters

FEMA's Ready.gov provides county-specific preparedness checklists and emergency planning guides.

FEMA Ready Guide →

Data Source

Risk data sourced from the FEMA National Risk Index (NRI). Risk scores are relative rankings (0–100) across all US counties — not absolute risk measures. Higher scores indicate higher relative risk compared to other counties.

Disclaimer: This data is informational only. It is not financial, insurance, or legal advice. Always consult a qualified professional before making insurance or real estate decisions.

← Back to All States

Explore more data for Maryland

Property Tax Cost of Living Crime Rate Income Health Schools Water Quality Weather County Score