| City: | Oakland, California |
| County: | Alameda County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 11:03:53 PM |
| Population: | No Population Data |
| Area Codes: | 341 / 415 / 510 / 628 / 925 |
| Classification: | PO Box |
| Coordinates: | 37.8046, -122.2699 |
| Quick Link: |
This isn't a geographic community. It's a postal designation carved from Oakland's urban core. The 221 business customers likely include professionals, small firms, and organizations needing a downtown mailing address. Street delivery for this area comes through neighboring ZIPs that cover Oakland's residential blocks. The single street address in the system (13th Street with 305 unit records) suggests an apartment building or office complex that shares this PO Box ZIP designation.
The single street entry (13th Street) confirms this is a specialized PO Box ZIP serving downtown Oakland rather than a traditional residential delivery area. The numbered street name fits Oakland's downtown grid pattern.
ZIP Code 94604 supports both business and residential activity. According to the Business Census (2024), there are 6 business establishments, employing about 11 people with an annual payroll of $414,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 1,784Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 6Source: CBP |
| 1st Quarter Payroll: | $97,000Source: CBP |
| Annual Payroll: | $414,000Source: CBP |
| # of Employees: | 11Source: CBP |
ZIP Code 94604 is located in Alameda County, California, within the San Francisco-Oakland-Fremont, CA Metropolitan Statistical Area (CBSA 41860) and California's 12nd Congressional District. This Metro area has a population of 4,653,593 people, about 0.00% of whom live in ZIP Code 94604, 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: | 4,653,593Source: Census |
| MSA: | San Francisco-Oakland-San Jose, CA CMSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 12Source: USPS |
| Congressional Land Area: | 38.97 sq miSource: Census |
| PMSA: | Oakland, CA PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 0653000Source: Census |
| Place Name: | Oakland city; CaliforniaSource: Census |
We could not locate which school district 94604 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 January 1, 2026.