| City: | Los Altos, California |
| County: | Santa Clara County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 10:53:26 PM |
| Population: | No Population Data |
| Area Code: | 650 |
| Classification: | PO Box |
| Coordinates: | 37.3853, -122.1133 |
| Quick Link: |
ZIP 94023 serves as a specialized postal facility for Los Altos, California, in Santa Clara County. This ZIP is classified as PO Box only but operates exclusively at a single Main Street location, where all 138 street delivery records and 676 PO Boxes are concentrated. The facility serves 340 business delivery points alongside the PO Box services.
This isn't a residential ZIP. There's no population within the ZIP code boundaries, and the point location sits within the larger 94022 ZIP that covers Los Altos proper. The post office handles business mail for the community, with all delivery addresses showing unit designators on Main Street.
Los Altos maintains this separate PO Box ZIP alongside standard street delivery in neighboring ZIP 94024 and 94022. The 676 PO Boxes serve local businesses and residents who prefer box service, while the city delivery indicator shows carrier service is available in the broader Los Altos area.
All delivery concentrates on Main Street with unit designators, indicating a business or multi-tenant facility.
ZIP Code 94023 supports both business and residential activity. According to the Business Census (2024), there are 12 business establishments, employing about 42 people with an annual payroll of $2,880,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 1,293Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 12Source: CBP |
| 1st Quarter Payroll: | $757,000Source: CBP |
| Annual Payroll: | $2,880,000Source: CBP |
| # of Employees: | 42Source: CBP |
ZIP Code 94023 is located in Santa Clara County, California, within the San Jose-Sunnyvale-Santa Clara, CA Metropolitan Statistical Area (CBSA 41940) and California's 16th Congressional District. This Metro area has a population of 1,969,353 people, about 0.00% of whom live in ZIP Code 94023. 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: | 16Source: USPS |
| Congressional Land Area: | 2839.51 sq miSource: Census |
| PMSA: | San Jose, CA PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 0643280Source: Census |
| Place Name: | Los Altos city; CaliforniaSource: Census |
We could not locate which school district 94023 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.