| City: | Arroyo Grande, California |
| County: | San Luis Obispo County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 10:40:03 PM |
| Population: | No Population Data |
| Area Codes: | 805 / 820 |
| Classification: | PO Box |
| Coordinates: | 35.1188, -120.5899 |
| Quick Link: |
ZIP 93421 serves as a PO Box facility for Arroyo Grande, California, in San Luis Obispo County. This isn't a residential ZIP code. It's a point location providing postal services while the neighboring ZIP 93420 handles street delivery throughout the city.
The post office maintains 698 PO Boxes serving both residents and the 343 business delivery points in the area. All ZIP+4 records for this code point to a single street, Station Way, which has 90 units. This suggests the post office facility itself or an adjacent commercial building. With 8 business establishments employing 76 workers recorded at this location, 93421 functions as an administrative postal designation rather than a geographic community.
Only one street address exists: Station Way, which appears to be the post office facility location.
ZIP Code 93421 supports both business and residential activity. According to the Business Census (2024), there are 8 business establishments, employing about 69 people with an annual payroll of $2,677,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 4,886Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 8Source: CBP |
| 1st Quarter Payroll: | $539,000Source: CBP |
| Annual Payroll: | $2,677,000Source: CBP |
| # of Employees: | 69Source: CBP |
ZIP Code 93421 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 281,486 people, about 0.00% of whom live in ZIP Code 93421. 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: | 281,486Source: 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: | 0602868Source: Census |
| Place Name: | Arroyo Grande city; CaliforniaSource: Census |
We could not locate which school district 93421 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.