| City: | Santa Monica, California |
| County: | Los Angeles County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 9:33:51 AM |
| Population: | No Population Data |
| Area Codes: | 310 / 424 |
| Classification: | PO Box |
| Coordinates: | 34.0195, -118.4906 |
| Quick Link: |
ZIP code 90406 is a PO Box-only designation for the Santa Monica Main Post Office in downtown Santa Monica, California. It doesn't cover any residential territory. Instead, it exists as a point location within ZIP 90401, which handles street delivery for the surrounding area.
The post office maintains 712 PO Boxes and serves 284 registered businesses. Street addresses appearing in postal records (7th Street and 5th Street) are PO Box Street Addressing records. These let box holders receive packages using the post office's physical address rather than "PO Box 123."
Santa Monica residents and businesses have full carrier delivery through neighboring ZIP codes like 90401, 90402, 90403, 90404, and 90405. The 90406 designation exists specifically for those who want or need a dedicated PO Box. Downtown businesses often prefer PO Boxes for package security, consistent addressing, or to separate business mail from residential delivery.
This isn't a PO Box Only Zone. Anyone in Santa Monica can receive mail at their street address. The 90406 ZIP simply provides an alternative for those who choose centralized pickup at the Main Post Office.
Both streets are PO Box Street Addressing records representing the post office's physical location, not actual street delivery routes.
ZIP Code 90406 supports both business and residential activity. According to the Business Census (2024), there are 13 business establishments, employing about 23 people with an annual payroll of $1,450,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 1,307Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 13Source: CBP |
| 1st Quarter Payroll: | $547,000Source: CBP |
| Annual Payroll: | $1,450,000Source: CBP |
| # of Employees: | 23Source: CBP |
ZIP Code 90406 is located in Los Angeles County, California, within the Los Angeles-Long Beach-Anaheim, CA Metropolitan Statistical Area (CBSA 31080) and California's 36th Congressional District. This Metro area has a population of 0 people, about 0.00% of whom live in ZIP Code 90406, and is subdivided into the Los Angeles-Long Beach-Glendale, CA division. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Los Angeles-Long Beach-Anaheim, CASource: Census |
| CBSA Number: | 31080Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | Los Angeles-Long Beach-Glendale, CA (CBSA Div 31084)Source: Census |
| CBSA Population: | 0Source: Census |
| MSA: | Los Angeles-Riverside-Orange County, CASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 36Source: USPS |
| Congressional Land Area: | 5912.64 sq miSource: Census |
| PMSA: | Los Angeles-Long Beach, CA PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 0670000Source: Census |
| Place Name: | Santa Monica city; CaliforniaSource: Census |
We could not locate which school district 90406 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.