The city of Sierra Vista is assigned specific ZIP Code(s) by the United States Postal Service (USPS) to make mail delivery accurate and efficient. A ZIP Code in Sierra Vista helps identify the correct postal area, ensuring that letters, parcels, and packages reach the right neighborhood or post office without delay. For residents, businesses, and visitors, knowing the correct Sierra Vista ZIP Code is important not only for mailing purposes but also for location-based services, navigation, and demographic reference.
| Post Office | Sierra Vista |
| County | Cochise |
| State | Arizona |
| ZIP Code | 85635 |
| Post Office | Sierra Vista |
| County | Cochise |
| State | Arizona |
| ZIP Code | 85650 |
| Post Office | Sierra Vista |
| County | Cochise |
| State | Arizona |
| ZIP Code | 85636 |
| Post Office | Sierra Vista |
| County | Cochise |
| State | Arizona |
| ZIP Code | 85671 |