Which county in Pennsylvania has the highest natural disaster risk?

Philadelphia County has the highest natural disaster risk score in Pennsylvania at 99.6 (Very High), based on FEMA National Risk Index data.

Which county in Pennsylvania is the safest from natural disasters?

Fulton County has the lowest natural disaster risk score in Pennsylvania at 7.8 (Very Low), based on FEMA NRI data.

What natural disasters are most common in Pennsylvania?

Pennsylvania 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.

Pennsylvania Disaster Risk

Natural disaster risk data for all 67 counties.

Avg Risk Score

67.4

Risk Rating

Relatively High

Counties with Data

of 67 total

Highest Risk Counties

Philadelphia County

99.6

Very High

Allegheny County

98.1

Relatively High

Montgomery County

96.8

Relatively High

Lancaster County

95.0

Relatively High

Bucks County

94.8

Relatively High

Lowest Risk Counties

Fulton County

7.8

Very Low

Sullivan County

10.7

Very Low

Cameron County

12.6

Very Low

Montour County

14.7

Very Low

Forest County

19.9

Very Low

All Pennsylvania Counties

County	Risk Score	Rating	Flood	Wildfire	Tornado	Earthquake
Philadelphia County	99.6	Very High	99.6	28.7	98.7	98.3
Allegheny County	98.1	Relatively High	99.2	60.4	91.2	87.9
Montgomery County	96.8	Relatively High	98.2	37.3	95.6	94.2
Lancaster County	95.0	Relatively High	96.9	37.2	79.8	93.5
Bucks County	94.8	Relatively High	97.1	55.5	92.1	93.9
Lehigh County	93.9	Relatively Moderate	95.4	30.3	87.4	89.8
Delaware County	92.9	Relatively Moderate	94.4	27.7	92.5	94.5
Berks County	92.7	Relatively Moderate	94.8	38.0	90.6	91.3
Chester County	91.9	Relatively Moderate	94.3	30.7	88.0	90.2
Luzerne County	91.6	Relatively Moderate	95.3	53.7	81.6	83.9
Dauphin County	91.1	Relatively Moderate	94.8	38.9	79.8	87.3
York County	90.4	Relatively Moderate	93.3	41.0	47.6	88.0
Northampton County	90.0	Relatively Moderate	93.6	28.6	80.9	84.4
Lackawanna County	89.9	Relatively Moderate	94.1	41.4	68.1	75.0
Westmoreland County	87.8	Relatively Moderate	93.8	54.0	55.7	73.8
Cumberland County	86.2	Relatively Moderate	91.1	47.6	68.2	81.9
Schuylkill County	85.3	Relatively Moderate	90.8	55.6	66.2	71.9
Monroe County	85.1	Relatively Moderate	88.1	51.6	65.9	73.2
Erie County	84.1	Relatively Moderate	90.7	36.9	66.6	60.1
Washington County	83.1	Relatively Moderate	91.4	46.1	49.8	59.3
Fayette County	82.2	Relatively Moderate	90.6	45.2	68.8	60.7
Lebanon County	79.9	Relatively Low	84.9	22.5	70.3	80.9
Lycoming County	79.6	Relatively Low	89.0	26.9	50.4	48.3
Butler County	79.3	Relatively Low	89.0	39.0	59.8	52.1
Northumberland County	79.2	Relatively Low	88.3	31.3	46.9	63.7
Mercer County	77.7	Relatively Low	87.9	36.4	55.3	51.5
Blair County	77.7	Relatively Low	87.5	32.0	58.9	62.3
Cambria County	76.4	Relatively Low	85.7	41.0	63.9	60.6
Franklin County	76.4	Relatively Low	84.3	51.3	46.2	75.4
Crawford County	76.0	Relatively Low	87.2	36.0	52.5	50.3
Beaver County	75.3	Relatively Low	87.0	34.9	56.6	55.0
Bradford County	73.1	Relatively Low	86.1	21.7	31.6	45.1
Armstrong County	69.3	Relatively Low	85.1	22.0	34.2	35.2
Mifflin County	69.3	Relatively Low	83.6	26.6	41.8	48.6
Bedford County	68.2	Relatively Low	84.0	29.2	26.0	44.5
Centre County	68.0	Relatively Low	81.2	32.5	42.8	58.2
Adams County	67.5	Relatively Low	76.2	44.2	46.2	72.6
Clearfield County	67.1	Relatively Low	80.6	34.3	40.7	43.4
Lawrence County	66.1	Relatively Low	83.1	27.3	37.7	36.7
Pike County	65.9	Relatively Low	78.8	71.9	27.8	56.1
Warren County	65.6	Relatively Low	82.8	11.9	21.9	21.1
Somerset County	64.2	Relatively Low	80.0	40.8	35.5	54.2
Indiana County	63.7	Relatively Low	77.8	37.9	42.6	48.3
Columbia County	62.1	Relatively Low	78.6	27.5	36.1	51.6
Tioga County	59.8	Relatively Low	78.9	20.8	24.0	31.1
Carbon County	59.4	Relatively Low	67.5	41.3	37.9	46.6
Jefferson County	57.9	Relatively Low	74.5	16.4	31.2	35.4
Wayne County	56.3	Relatively Low	71.3	20.1	30.4	47.6
Venango County	55.6	Relatively Low	74.1	12.6	34.5	28.5
Union County	55.2	Relatively Low	71.8	10.4	33.7	43.6
Greene County	55.1	Relatively Low	74.3	23.4	34.7	39.0
Snyder County	54.3	Relatively Low	71.2	17.7	36.9	48.7
McKean County	53.8	Relatively Low	73.2	10.2	24.5	36.1
Susquehanna County	53.6	Relatively Low	71.0	21.2	47.0	46.9
Perry County	53.1	Relatively Low	69.5	25.0	31.6	38.7
Clinton County	51.8	Relatively Low	71.3	15.2	27.3	33.0
Huntingdon County	50.3	Relatively Low	68.8	22.9	27.1	41.8
Elk County	45.2	Relatively Low	68.0	5.9	18.1	27.6
Wyoming County	44.8	Relatively Low	69.2	21.9	20.6	35.8
Juniata County	38.8	Very Low	60.3	16.5	26.9	37.8
Clarion County	30.0	Very Low	52.2	16.3	28.8	32.0
Potter County	28.1	Very Low	55.2	3.3	15.0	21.1
Forest County	19.9	Very Low	43.5	4.8	14.0	19.6
Montour County	14.7	Very Low	38.3	4.6	20.3	33.8
Cameron County	12.6	Very Low	40.7	0.7	10.8	12.6
Sullivan County	10.7	Very Low	37.4	6.0	12.2	24.5
Fulton County	7.8	Very Low	21.5	22.8	15.5	34.2

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