HazardFacts

All states › Wisconsin

Natural hazard risk by county in Wisconsin

9 county pages so far. Overall ratings from the FEMA National Risk Index v1.20 (December 2025), which compares each county with all US counties.

Open a county for its FEMA ratings for each hazard, flood insurance and claims records, disaster declarations and tornado history.

CountyFEMA overall risk rating
Brown CountyRelatively Moderate
Dane CountyRelatively Moderate
Door CountyRelatively Low
Kenosha CountyRelatively Moderate
Marathon CountyRelatively Moderate
Milwaukee CountyRelatively High
Walworth CountyRelatively Low
Washington CountyRelatively Low
Waukesha CountyRelatively Moderate

This product uses the Federal Emergency Management Agency's National Risk Index dataset API or downloadable datasets but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s). This product uses the FEMA OpenFEMA API, but is not endorsed by FEMA.