| City: | San Luis Obispo, California |
| City Alias: | Sn Luis Obisp |
| County: | San Luis Obispo County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 9:46:51 AM |
| Population: | No Population Data |
| Area Codes: | 805 / 820 |
| Classification: | PO Box |
| Coordinates: | 35.2828, -120.6587 |
| Quick Link: |
ZIP code 93406 serves as the downtown PO Box facility for San Luis Obispo, California. This isn't a residential ZIP. It's a point location within the larger San Luis Obispo area (93401), dedicated to providing PO Box services for local businesses and residents who prefer box delivery.
The post office maintains 809 PO Boxes and serves 553 business delivery points. Most customers are downtown businesses, professional offices, and residents who want a secure, centralized mail location. The facility address is on Marsh Street, San Luis Obispo's main commercial corridor.
This ZIP exists alongside standard street delivery ZIPs that serve San Luis Obispo's residential neighborhoods. Residents have the option of street delivery through neighboring ZIPs or maintaining a PO Box at this location. Businesses often choose PO Boxes for professional mailing addresses or when their physical location doesn't align well with carrier routes.
Marsh Street is the post office facility address, serving as the base for PO Box Street Addressing.
ZIP Code 93406 supports both business and residential activity. According to the Business Census (2024), there are 17 business establishments, employing about 145 people with an annual payroll of $5,540,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 4,641Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 17Source: CBP |
| 1st Quarter Payroll: | $1,254,000Source: CBP |
| Annual Payroll: | $5,540,000Source: CBP |
| # of Employees: | 145Source: CBP |
ZIP Code 93406 is located in San Luis Obispo County, California, within the San Luis Obispo-Paso Robles, CA Metropolitan Statistical Area (CBSA 42020) and California's 24th Congressional District. This Metro area has a population of 269,637 people, about 0.00% of whom live in ZIP Code 93406. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | San Luis Obispo-Paso Robles, CASource: Census |
| CBSA Number: | 42020Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 269,637Source: Census |
| MSA: | San Luis Obispo-Atascadero-Paso Robles, CA MSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 24Source: USPS |
| Congressional Land Area: | 6883.35 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 0668154Source: Census |
| Place Name: | San Luis Obispo city; CaliforniaSource: Census |
We could not locate which school district 93406 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.