| City: | Tucson, Arizona |
| County: | Pima County |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 10:20:24 AM |
| Population: | No Population Data |
| Area Code: | 520 |
| Classification: | PO Box |
| Coordinates: | 32.2217, -110.9259 |
| Quick Link: |
ZIP code 85728 exists as a PO Box-only designation within Tucson, Arizona. It doesn't cover a geographic area. Instead, it's assigned to a single post office location on E River Road in the Catalina Foothills area. The post office maintains 584 PO Boxes that serve residents and businesses from the surrounding neighborhoods.
This ZIP has zero residential population because nobody lives within its boundaries. It's a point location, not a territory. Street delivery in this area uses ZIP code 85718, which geographically contains the 85728 post office. Customers who want PO Box service at this location receive the 85728 ZIP code, while their neighbors getting home delivery use 85718.
The post office serves an upscale part of Tucson. Nearby neighborhoods include Catalina Foothills Estates, Campus Farm, and St. Philip's Plaza. These affluent communities near the Catalina Mountains generate demand for PO Box services, whether for privacy, package security, or business mail. The facility handles 398 business delivery points alongside residential boxes.
All 86 ZIP+4 street records point to a single address on E River Road with various unit numbers. This confirms the post office building as the only physical location. It's a common setup for PO Box ZIPs in urban areas where they designate a specific facility rather than a delivery territory.
All records point to the post office address on E River Road with unit designations for individual boxes.
ZIP Code 85728 supports both business and residential activity. According to the Business Census (2024), there are 11 business establishments, employing about 29 people with an annual payroll of $1,083,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 960Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 11Source: CBP |
| 1st Quarter Payroll: | $197,000Source: CBP |
| Annual Payroll: | $1,083,000Source: CBP |
| # of Employees: | 29Source: CBP |
ZIP Code 85728 is located in Pima County, Arizona, within the Tucson, AZ Metropolitan Statistical Area (CBSA 46060) and Arizona's 6th Congressional District. This Metro area has a population of 980,263 people, about 0.00% of whom live in ZIP Code 85728. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Tucson, AZSource: Census |
| CBSA Number: | 46060Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 980,263Source: Census |
| MSA: | Tucson, AZ MSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 06Source: USPS |
| Congressional Land Area: | 625.07 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 0477000Source: Census |
| Place Name: | Tucson city; ArizonaSource: Census |
We could not locate which school district 85728 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on March 1, 2026.