FEMA’s National Risk Index rates natural-hazard risk for Bullhead CDP, SD as Very Low (composite score 38.1), which is relatively lower than many U.S. communities. The strongest component scores on US5 are wildfire (77.3) and flood (16.1). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.
Climate normals for Bullhead CDP, SD show little to no average snow and around 17.3 inches of annual precipitation.
IRS migration statistics show a net inflow of about 18 for ZIP 57621 (Bullhead CDP, SD) on US5’s published series — a signal of people/tax filers moving in relative to those leaving. Inflows often track job growth, housing demand, or lifestyle migration; treat the figure as a directional indicator rather than a precise headcount.