Out of 553 ZIP codes with data in Arizona, these are the highest-ranked areas for purchase risk. See also: National Worst ZIP Codes for Homebuyers — Hidden Risk Factors | All Arizona Rankings
| Statistic | Value |
|---|---|
| ZIP codes ranked | 553 |
| Highest value | 63/100 |
| Median value | 39/100 |
| State | Arizona |
Top 100 Worst ZIP Codes
| Rank | ZIP Code | City | State | Purchase Risk | Safety Score |
|---|---|---|---|---|---|
| 1 | 85533 | Clifton | AZ | 63/100 | 49/100 |
| 2 | 85352 | Tacna | AZ | 57/100 | 58/100 |
| 3 | 85135 | Hayden | AZ | 56/100 | 48/100 |
| 4 | 85328 | Cibola | AZ | 56/100 | 58/100 |
| 5 | 85534 | Duncan | AZ | 56/100 | 74/100 |
| 6 | 85632 | San Simon | AZ | 54/100 | 58/100 |
| 7 | 85707 | Tucson | AZ | 54/100 | 50/100 |
| 8 | 85018 | Phoenix | AZ | 53/100 | 48/100 |
| 9 | 86029 | Sun Valley | AZ | 53/100 | 69/100 |
| 10 | 85031 | Phoenix | AZ | 52/100 | 48/100 |
| 11 | 85324 | Black Canyon City | AZ | 52/100 | 58/100 |
| 12 | 85723 | Tucson | AZ | 52/100 | 50/100 |
| 13 | 85734 | Tucson | AZ | 52/100 | 50/100 |
| 14 | 85007 | Phoenix | AZ | 51/100 | 53/100 |
| 15 | 85013 | Phoenix | AZ | 51/100 | 48/100 |
| 16 | 85015 | Phoenix | AZ | 51/100 | 48/100 |
| 17 | 85017 | Phoenix | AZ | 51/100 | 53/100 |
| 18 | 85019 | Phoenix | AZ | 51/100 | 53/100 |
| 19 | 85621 | Nogales | AZ | 51/100 | 63/100 |
| 20 | 85705 | Tucson | AZ | 51/100 | 53/100 |
| 21 | 86047 | Winslow | AZ | 51/100 | 70/100 |
| 22 | 86313 | Prescott | AZ | 51/100 | 27/100 |
| 23 | 85008 | Phoenix | AZ | 50/100 | 48/100 |
| 24 | 85009 | Phoenix | AZ | 50/100 | 53/100 |
Methodology
The Home Purchase Risk Score combines area indicators that may lead to added costs for homebuyers: water system violation records, lead service line indicators, county radon potential, flood zones and housing age. An indicator does not mean a home needs filtration, mitigation, insurance or upgrades; a home test or inspection decides that. These are factors that standard home inspections may not fully capture.
Data sources: EPA Safe Drinking Water Information System (SDWIS), FEMA National Flood Insurance Program, EPA radon zone maps, EIA electricity rates, and Consumer Confidence Reports. Last updated: 2026-04-13.
Frequently Asked Questions
What is the Home Purchase Risk Score?
This score (0-100) estimates the hidden environmental costs a homebuyer may face: water filtration needs, lead pipe replacement, radon mitigation, flood insurance, and infrastructure upgrades. Higher scores mean more potential unexpected expenses after purchase.
What should homebuyers do in high-risk ZIP codes?
Request a water quality test, check for lead service lines with the utility, test for radon before closing, verify FEMA flood zone designation, and factor in potential remediation costs ($5,000-$30,000+) to your budget.
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