Natural Disaster Risk — ZIP Code 57646

Natural Hazard Profile: ZIP 57646, South Dakota

Located in the northern tier of the continental United States, ZIP 57646 serves the Mound City community. The semi-arid continental climate of this part of South Dakota — bringing harsh winters, hot summers, and significant seasonal variation — directly shapes the hazard exposure for properties in this postal area.

ZIP 57646's overall natural disaster risk is rated 3.8/10 (Low) by FEMA's National Risk Index. Fire risk is the leading concern in the area, where seasonal drought and combustible vegetation combine to create a high-risk wildfire environment. Secondary hazards include hail and winter.

Relative to other U.S. communities, ZIP 57646's natural disaster risk is below the U.S. national average of 4.5/10, slightly below the 4.9/10 state average. The hazard distribution here is led by wildfire and hail, as measured by FEMA across South Dakota. While city-specific sub-county variation exists, these scores represent the best available federal risk estimate.

ZIP 57646 carries a below-average natural disaster risk, reflecting fewer and less severe hazard exposures than typical U.S. communities. Even so, the area's primary risk — wildfire — warrants awareness and appropriate insurance coverage, as lower risk does not mean zero risk.