| City: | Hayward, California |
| City Alias: | Mount Eden |
| County: | Alameda County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 9:52:43 AM |
| Population: | No Population Data |
| Area Codes: | 341 / 510 / 925 |
| Classification: | PO Box |
| Coordinates: | 37.6687, -122.0799 |
| Quick Link: |
The post office handles mail for a single street route covering Aldengate Way, where 20 addresses use unit numbers. This pattern is typical of California's Bay Area communities where PO Box ZIPs coexist with standard carrier delivery nearby. Residents here aren't isolated from street delivery options. They simply have access to both systems within the greater Hayward postal infrastructure.
The single street serviced reflects a highly focused delivery zone, typical of urban PO Box facilities that complement rather than replace standard carrier routes.
ZIP Code 94557 supports both business and residential activity. According to the Business Census (2024), there are 3 business establishments, employing about 67 people with an annual payroll of $2,561,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 379Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 3Source: CBP |
| 1st Quarter Payroll: | $715,000Source: CBP |
| Annual Payroll: | $2,561,000Source: CBP |
| # of Employees: | 67Source: CBP |
ZIP Code 94557 is located in Alameda County, California, within the San Francisco-Oakland-Fremont, CA Metropolitan Statistical Area (CBSA 41860) and California's 14th and 15th Congressional Districts. This Metro area has a population of 4,335,391 people, about 0.00% of whom live in ZIP Code 94557, and is subdivided into the Oakland-Fremont-Berkeley, CA division. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | San Francisco-Oakland-Fremont, CASource: Census |
| CBSA Number: | 41860Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | Oakland-Fremont-Berkeley, CA (CBSA Div 36084)Source: Census |
| CBSA Population: | 4,335,391Source: Census |
| MSA: | San Francisco-Oakland-San Jose, CA CMSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 14,15Source: USPS |
| Congressional Land Area: | 259.5, 599.45 sq miSource: Census |
| PMSA: | Oakland, CA PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 0633000Source: Census |
| Place Name: | Hayward city; CaliforniaSource: Census |
We could not locate which school district 94557 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 February 1, 2026.