Natural Disaster Risk in Mason County

Natural Hazard Profile: Mason County, Washington

Mason County is located in the United States in Washington, home to roughly 65,689 residents. The county experiences mild, rainy winters west of the Cascades and semi-arid conditions to the east, with a critical wildfire period in eastern Washington each summer 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, Mason County carries an overall risk score of 5.5/10, placing it in the moderate category. Coastal tsunami exposure is the dominant hazard concern, with the regional tectonic environment capable of generating both local and distant-source tsunami waves. The area also faces notable exposure to earthquake and landslide.

Mason County's risk score, near the 5.8/10 state average and above the U.S. national average of 4.5/10. Of the 18 hazard categories tracked by FEMA for Mason County, the highest-scoring are tsunami, earthquake, and landslide. These scores reflect county-level data and represent the baseline risk that all communities in the county share.

Mason County's moderate risk profile means that while catastrophic events are less frequent, they do occur. Standard homeowners insurance typically covers many common hazards here, but confirming that tsunami exposure is adequately protected is a worthwhile step for property owners.