ZIP 71663 — Climate & Environment

FEMA’s National Risk Index rates natural-hazard risk for Portland city, AR as Relatively Low (composite score 43.8), which is near the middle of the national distribution. The strongest component scores on US5 are hurricane (65.7) and flood (49.4). 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.