Natural Disaster Risk in Ozaukee County

Natural Hazard Profile: Ozaukee County, Wisconsin

Ozaukee County is located in the United States in Wisconsin, home to roughly 91,247 residents. The county experiences long, cold winters with lake-effect snow and warm summers, with severe blizzards and spring tornado outbreaks shaping the natural hazards faced by its communities. FEMA assesses risk at this county level, providing the baseline for every city and ZIP code within its boundaries.

According to FEMA's National Risk Index, Ozaukee County carries an overall risk score of 5.1/10, placing it in the moderate category. Coastal flood risk defines the local natural hazard environment, with sea-level rise trends gradually increasing the frequency of tidal flooding events alongside storm surge threats. The area also faces notable exposure to cold wave and hail.

Ozaukee County's risk score, near the 5.4/10 state average and above the U.S. national average of 4.5/10. Of the 18 hazard categories tracked by FEMA for Ozaukee County, the highest-scoring are coastal flood, cold wave, and hail. These scores reflect county-level data and represent the baseline risk that all communities in the county share.

With a moderate risk rating, Ozaukee County residents are well-served by maintaining standard preparedness practices — an emergency supply kit, awareness of local hazard seasonality, and insurance that covers the top local risks. Periodic review of coverage for coastal flood is recommended.