Natural Disaster Risk — ZIP Code 83421

Natural Hazard Profile: ZIP 83421, Idaho

ZIP 83421 covers part of the Chester area, in the Great Plains. The surrounding region experiences dry summers, cold winters, and significant wildfire risk, with a high fire danger period from July through September shaping the natural hazards that residents of this ZIP code face. Risk scores here are derived from FEMA data for the encompassing county.

FEMA rates ZIP 83421's composite natural disaster risk at 5.5 out of 10 — moderate risk. Snow avalanche exposure tops the local risk profile, with the area's mountain setting and annual snowfall loading producing regular avalanche cycles on steep slopes. Residents should also account for volcano and wildfire risk in their preparedness planning.

ZIP 83421's risk score, slightly above the 5.1/10 state average and above the U.S. national average of 4.5/10. Of the 18 hazard categories tracked by FEMA, the highest-scoring are avalanche, volcano, and wildfire. These scores reflect county-level data and represent the baseline risk that all communities in the county share.

ZIP 83421'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 avalanche exposure is adequately protected is a worthwhile step for property owners.