| City: | Upland, California |
| County: | San Bernardino County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 10:10:27 PM |
| Population: | No Population Data |
| Area Codes: | 840 / 909 |
| Classification: | PO Box |
| Coordinates: | 34.0978, -117.6478 |
| Quick Link: |
This isn't a residential ZIP. The facility provides PO Box service for customers who prefer dedicated boxes separate from their street addresses. The 131 ZIP+4 codes include 96 street-level records and 35 PO Box records, with most delivery activity concentrated along E Arrow Hwy where the post office sits. The two carrier routes handle city delivery, working in coordination with the broader Upland postal network.
The single street, E Arrow Hwy, is the post office facility location rather than a residential delivery area. This major east-west corridor through the Inland Empire houses the PO Box operation serving the broader Upland community.
ZIP Code 91785 supports both business and residential activity. According to the Business Census (2024), there are 11 business establishments, employing about 62 people with an annual payroll of $3,048,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 4,575Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 11Source: CBP |
| 1st Quarter Payroll: | $759,000Source: CBP |
| Annual Payroll: | $3,048,000Source: CBP |
| # of Employees: | 62Source: CBP |
ZIP Code 91785 is located in San Bernardino County, California, within the Riverside-San Bernardino-Ontario, CA Metropolitan Statistical Area (CBSA 40140) and California's 35th Congressional District. This Metro area has a population of 4,637,725 people, about 0.00% of whom live in ZIP Code 91785. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Riverside-San Bernardino-Ontario, CASource: Census |
| CBSA Number: | 40140Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 4,637,725Source: Census |
| MSA: | Los Angeles-Riverside-Orange County, CASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 35Source: USPS |
| Congressional Land Area: | 168.88 sq miSource: Census |
| PMSA: | Riverside-San Bernardino, CA PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 0681344Source: Census |
| Place Name: | Upland city; CaliforniaSource: Census |
ZIP Code 91785 is in the Upland Unified School District, which serves grades Kindergarten thru 12th. There are 1 public school(s) in this ZIP Code, and we have located 3 private school(s). 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 February 1, 2026.