Arizona: 15 counties covered

Across 15 Arizona counties with a FEMA flood score, the average national percentile is 87.3 — but that average hides real spread between counties, which is why each one gets its own page rather than a single statewide number.

• Maricopa County — 99.9th percentile, Very High
• Pima County — 99.5th percentile, Very High
• Pinal County — 96.4th percentile, Relatively High
• Yavapai County — 96.1th percentile, Relatively High
• Mohave County — 97.1th percentile, Relatively High
• Yuma County — 91th percentile, Relatively Moderate
• Coconino County — 96.5th percentile, Relatively High
• Cochise County — 93.8th percentile, Relatively High
• Navajo County — 89.5th percentile, Relatively Moderate
• Apache County — 80.7th percentile, Relatively Moderate
• Gila County — 93.1th percentile, Relatively Moderate
• Santa Cruz County — 87.4th percentile, Relatively Moderate
• Graham County — 67.9th percentile, Relatively Low
• La Paz County — 91.5th percentile, Relatively Moderate
• Greenlee County — 29.6th percentile, Very Low