| City: | Palo Alto, California |
| City Alias: | Stanford |
| County: | Santa Clara County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 10:58:42 PM |
| Population: | No Population Data |
| Area Code: | 650 |
| Classification: | PO Box |
| Coordinates: | 37.4417, -122.1417 |
| Quick Link: |
ZIP 94309 serves a specific location within the Stanford University area of Palo Alto, California. This PO Box ZIP has "STANFORD" as an accepted mailing alias, alongside the primary city name Palo Alto. The ZIP is classified as PO Box only but operates with both box and street delivery infrastructure.
Mail delivery centers on a single street address: Lasuen, with 378 unit-designated delivery points. The post office maintains 365 PO Boxes and serves 128 business delivery points. This pattern suggests a concentrated facility rather than a traditional residential community. The ZIP has zero residential population and no defined land area (it's a point location enclosed within ZIP 94305).
Despite the PO Box classification, this isn't a PO Box Only Zone. Street delivery is available through 2 City carrier routes. This mixed infrastructure serves the specialized needs of the location, combining traditional boxes with unit-based addressing at the Lasuen street address.
Mail can be addressed to either Palo Alto, CA 94309 or Stanford, CA 94309. Both city names are valid for mailing purposes.
All street delivery goes to units at a single address: Lasuen.
ZIP Code 94309 supports both business and residential activity. According to the Business Census (2024), there are 29 business establishments, employing about 93 people with an annual payroll of $3,914,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 1,494Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 29Source: CBP |
| 1st Quarter Payroll: | $1,012,000Source: CBP |
| Annual Payroll: | $3,914,000Source: CBP |
| # of Employees: | 93Source: CBP |
ZIP Code 94309 is located in Santa Clara County, California, within the San Jose-Sunnyvale-Santa Clara, CA Metropolitan Statistical Area (CBSA 41940) and California's 16th and 18th Congressional Districts. This Metro area has a population of 1,969,353 people, about 0.00% of whom live in ZIP Code 94309. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | San Jose-Sunnyvale-Santa Clara, CASource: Census |
| CBSA Number: | 41940Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 1,969,353Source: Census |
| MSA: | San Francisco-Oakland-San Jose, CA CMSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 16,18Source: USPS |
| Congressional Land Area: | 2839.51, 696.12 sq miSource: Census |
| PMSA: | San Jose, CA PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 0655282Source: Census |
| Place Name: | Palo Alto city; CaliforniaSource: Census |
We could not locate which school district 94309 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.