| City: | Los Osos, California |
| City Alias: | San Luis Obispo, Sn Luis Obisp |
| County: | San Luis Obispo County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 9:46:55 AM |
| Population: | No Population Data |
| Area Codes: | 805 / 820 |
| Classification: | PO Box |
| Coordinates: | 35.3112, -120.8314 |
| Quick Link: |
Los Osos sits along California's Central Coast in San Luis Obispo County, nestled between Morro Bay and the Irish Hills. ZIP 93412 is classified as a PO Box ZIP, but it isn't an isolated mail zone. This branch post office operates within the larger 93402 delivery area. Residents can receive mail through PO Boxes here or get street delivery via the neighboring ZIP.
The post office maintains 407 PO Boxes and serves 189 business delivery points. All local delivery runs along Los Osos Valley Road, the main commercial corridor through town. This single street accounts for all 69 ZIP+4 delivery records, with businesses and multi-unit addresses using UNIT designators.
Mail addressed to 93412 can use "Los Osos, CA" or "San Luis Obispo, CA" as the city name. Both are valid mailing addresses. The ZIP was established before October 2004 and operates as a branch facility of the San Luis Obispo postal network. Since this isn't a PO Box Only Zone, residents who prefer street delivery can use the 93402 ZIP instead.
Los Osos Valley Road is the sole street address in this ZIP, serving as the town's main commercial thoroughfare.
ZIP Code 93412 supports both business and residential activity. According to the Business Census (2024), there are 6 business establishments, employing about 68 people with an annual payroll of $2,724,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 590Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 6Source: CBP |
| 1st Quarter Payroll: | $641,000Source: CBP |
| Annual Payroll: | $2,724,000Source: CBP |
| # of Employees: | 68Source: CBP |
ZIP Code 93412 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 93412. 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: | 0644182Source: Census |
| Place Name: | Los Osos CDP; CaliforniaSource: Census |
We could not locate which school district 93412 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.