Which county in Wisconsin has the highest natural disaster risk?

Milwaukee County has the highest natural disaster risk score in Wisconsin at 98.4 (Relatively High), based on FEMA National Risk Index data.

Which county in Wisconsin is the safest from natural disasters?

Pepin County has the lowest natural disaster risk score in Wisconsin at 7.2 (Very Low), based on FEMA NRI data.

What natural disasters are most common in Wisconsin?

Wisconsin 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.

Wisconsin Disaster Risk

Natural disaster risk data for all 72 counties.

Avg Risk Score

59.1

Risk Rating

Relatively High

Counties with Data

of 72 total

Highest Risk Counties

Milwaukee County

98.4

Relatively High

Dane County

93.9

Relatively Moderate

Brown County

90.0

Relatively Moderate

Waukesha County

88.9

Relatively Moderate

Marathon County

87.2

Relatively Moderate

Lowest Risk Counties

Pepin County

7.2

Very Low

Menominee County

9.1

Very Low

Iron County

11.5

Very Low

Buffalo County

14.5

Very Low

Kewaunee County

17.3

Very Low

All Wisconsin Counties

County	Risk Score	Rating	Flood	Wildfire	Tornado	Earthquake
Milwaukee County	98.4	Relatively High	97.0	29.5	99.0	80.8
Dane County	93.9	Relatively Moderate	94.3	60.2	97.6	70.7
Brown County	90.0	Relatively Moderate	91.9	33.8	93.4	35.3
Waukesha County	88.9	Relatively Moderate	89.8	49.7	95.7	57.4
Marathon County	87.2	Relatively Moderate	87.7	40.1	83.8	18.0
Winnebago County	86.8	Relatively Moderate	89.3	40.2	91.3	33.0
Rock County	86.4	Relatively Moderate	87.6	26.8	94.3	59.3
Racine County	85.4	Relatively Moderate	85.7	29.8	93.1	61.4
Kenosha County	85.0	Relatively Moderate	76.6	29.1	92.7	61.5
Columbia County	81.4	Relatively Moderate	75.6	42.3	75.7	28.7
La Crosse County	80.5	Relatively Low	74.0	11.8	84.6	22.8
Marinette County	80.0	Relatively Low	72.7	46.7	49.0	11.9
Outagamie County	79.7	Relatively Low	77.1	26.7	86.8	29.4
Monroe County	78.8	Relatively Low	78.4	33.3	76.3	17.6
Eau Claire County	78.3	Relatively Low	79.9	30.1	80.6	9.8
Fond du Lac County	76.3	Relatively Low	74.3	50.7	88.5	35.0
Wood County	75.9	Relatively Low	77.7	48.2	79.0	21.4
Jefferson County	75.8	Relatively Low	79.5	39.9	86.1	43.4
Vernon County	75.0	Relatively Low	70.2	17.2	69.4	13.2
Walworth County	74.8	Relatively Low	73.2	25.3	88.2	52.1
Sawyer County	74.5	Relatively Low	62.1	17.7	30.2	0.8
Sauk County	72.1	Relatively Low	77.5	27.2	78.3	25.3
Adams County	70.9	Relatively Low	72.5	53.1	73.4	21.2
Juneau County	70.8	Relatively Low	70.7	46.5	65.3	20.3
Sheboygan County	70.2	Relatively Low	71.8	27.1	84.4	30.7
Dodge County	69.9	Relatively Low	68.0	47.6	85.3	36.9
Manitowoc County	68.9	Relatively Low	69.7	19.2	77.3	25.3
Barron County	68.6	Relatively Low	59.1	17.6	75.0	7.4
Clark County	68.4	Relatively Low	69.1	19.8	71.7	14.1
Washington County	68.3	Relatively Low	66.1	49.0	84.1	32.5
Waupaca County	67.6	Relatively Low	66.3	40.9	76.8	19.3
Chippewa County	67.3	Relatively Low	71.0	20.0	70.9	10.3
St. Croix County	64.1	Relatively Low	64.1	45.3	84.8	7.1
Polk County	63.3	Relatively Low	55.2	41.7	76.5	5.5
Vilas County	63.3	Relatively Low	60.9	22.1	29.1	2.7
Shawano County	63.1	Relatively Low	59.7	21.9	65.9	13.1
Portage County	62.7	Relatively Low	66.8	32.3	70.2	17.0
Oneida County	62.5	Relatively Low	61.1	27.2	46.7	5.2
Douglas County	62.4	Relatively Low	61.5	39.2	27.4	2.5
Oconto County	61.5	Relatively Low	68.8	38.8	60.3	13.0
Grant County	61.1	Relatively Low	62.2	16.7	76.4	29.8
Trempealeau County	58.7	Relatively Low	67.5	13.2	59.8	5.5
Green Lake County	58.0	Relatively Low	62.3	47.1	75.1	24.0
Florence County	54.2	Relatively Low	11.0	8.6	11.0	0.5
Lincoln County	52.6	Relatively Low	56.2	29.6	44.0	4.3
Richland County	51.6	Relatively Low	62.9	14.8	51.0	12.1
Ozaukee County	50.3	Relatively Low	58.3	19.5	59.3	26.4
Langlade County	49.6	Relatively Low	39.2	20.6	45.6	8.5
Burnett County	49.3	Relatively Low	55.5	68.8	46.7	3.2
Dunn County	48.8	Relatively Low	50.2	11.9	68.3	4.6
Jackson County	48.1	Relatively Low	54.7	31.0	51.6	6.4
Marquette County	47.6	Relatively Low	43.5	36.7	52.9	13.4
Forest County	47.4	Relatively Low	20.7	13.4	22.0	1.6
Door County	46.9	Relatively Low	52.1	39.9	47.6	12.8
Green County	46.4	Relatively Low	44.4	31.1	65.6	29.0
Crawford County	46.2	Relatively Low	56.1	13.9	58.4	19.9
Waushara County	43.3	Relatively Low	44.9	51.3	60.2	13.1
Pierce County	42.3	Very Low	48.7	17.8	73.4	3.3
Rusk County	37.3	Very Low	44.7	6.6	34.4	2.5
Taylor County	37.2	Very Low	42.5	14.4	48.6	4.1
Bayfield County	35.1	Very Low	33.5	17.5	16.0	0.0
Lafayette County	33.1	Very Low	27.3	14.7	44.6	21.0
Washburn County	32.8	Very Low	32.5	39.5	35.5	1.0
Price County	32.3	Very Low	38.7	13.7	34.3	2.4
Ashland County	31.7	Very Low	28.2	5.4	13.8	0.3
Calumet County	30.2	Very Low	33.1	10.1	58.2	15.4
Iowa County	23.4	Very Low	31.7	19.5	49.3	19.3
Kewaunee County	17.3	Very Low	30.2	9.9	39.7	12.6
Buffalo County	14.5	Very Low	24.6	4.3	36.4	1.9
Iron County	11.5	Very Low	21.8	7.4	12.2	0.3
Menominee County	9.1	Very Low	7.4	3.1	21.5	1.2
Pepin County	7.2	Very Low	16.2	2.2	30.9	1.1

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