Arizona natural disaster risk
Ratings for all 15 counties, the federal disaster record and flood insurance across the state.
Arizona has had 35 major federal disaster declarations for natural events since 1953. FEMA expects about $3.6 billion a year in losses from natural hazards across the state. Inland flooding is the costliest hazard in 14 of its 15 counties, followed by earthquake in 1. 1 is rated Very High overall. About 0.7% of homes carry federal flood insurance, and the program has paid $61.8 million on 5,263 claims here since 1978.
Largest counties
Maricopa County
4,418,836 people
Inland floodingPima County
1,042,716 people
Inland floodingPinal County
424,095 people
Inland floodingYavapai County
235,830 people
Inland floodingMohave County
212,833 people
Inland floodingYuma County
203,299 people
EarthquakeCoconino County
144,629 people
Inland floodingCochise County
125,169 people
Inland floodingNavajo County
106,501 people
Inland floodingApache County
65,844 people
Inland floodingGila County
53,118 people
Inland floodingSanta Cruz County
47,632 people
Inland floodingAll 15 counties
| Name | People | Overall risk | Top hazard | Declarations | Homes insured |
|---|---|---|---|---|---|
| Apache County | 65,844 | Inland flooding | 14 | 0.1% | |
| Cochise County | 125,169 | Inland flooding | 12 | 1.2% | |
| Coconino County | 144,629 | Inland flooding | 22 | 1.4% | |
| Gila County | 53,118 | Inland flooding | 21 | 0.9% | |
| Graham County | 38,453 | Inland flooding | 11 | 1.6% | |
| Greenlee County | 9,527 | Inland flooding | 11 | 0.3% | |
| La Paz County | 16,451 | Inland flooding | 5 | 1.5% | |
| Maricopa County | 4,418,836 | Inland flooding | 24 | 0.6% | |
| Mohave County | 212,833 | Inland flooding | 13 | 0.5% | |
| Navajo County | 106,501 | Inland flooding | 19 | 0.6% | |
| Pima County | 1,042,716 | Inland flooding | 13 | 0.7% | |
| Pinal County | 424,095 | Inland flooding | 21 | 0.5% | |
| Santa Cruz County | 47,632 | Inland flooding | 6 | 1.8% | |
| Yavapai County | 235,830 | Inland flooding | 24 | 1.2% | |
| Yuma County | 203,299 | Earthquake | 4 | 0.5% |
Linked names have a full page. Overall risk from the FEMA National Risk Index (December 2025); declarations are federal disaster and emergency declarations for natural events since 1953 (OpenFEMA); homes insured is the share with NFIP flood policies.