| City: | Spring Valley, California |
| County: | San Diego County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 10:12:46 PM |
| Population: | No Population Data |
| Area Codes: | 619 / 858 |
| Classification: | PO Box |
| Coordinates: | 32.7449, -116.9981 |
| Quick Link: |
ZIP 91979 serves as a PO Box facility for Spring Valley in San Diego County, California. This ZIP doesn't cover residential territory. Instead, it operates as a point location within the larger Spring Valley area, which receives standard street delivery through ZIP 91977.
The facility at Austin Drive maintains 513 PO Boxes and handles mail for 221 business delivery points. All street delivery records (87 total) are associated with a single address on Austin Drive with multiple units, indicating a commercial mail center or postal retail facility. Spring Valley residents can choose PO Box service here while their homes typically receive street delivery through neighboring ZIP codes.
Spring Valley is part of the San Diego metropolitan area, with nearby communities including La Presa (0.7 miles), Casa de Oro-Mount Helix (0.9 miles), and Rancho San Diego (1.3 miles). The classification as a PO Box ZIP reflects the facility's specialized function rather than community-wide delivery patterns. This isn't a PO Box Only Zone, meaning street delivery alternatives exist throughout the Spring Valley area.
Single-street facility with unit designations indicates a commercial mail center.
ZIP Code 91979 supports both business and residential activity. According to the Business Census (2024), there are 7 business establishments, employing about 12 people with an annual payroll of $449,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 2,419Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 7Source: CBP |
| 1st Quarter Payroll: | $86,000Source: CBP |
| Annual Payroll: | $449,000Source: CBP |
| # of Employees: | 12Source: CBP |
ZIP Code 91979 is located in San Diego County, California, within the San Diego-Chula Vista-Carlsbad, CA Metropolitan Statistical Area (CBSA 41740) and California's 51st Congressional District. This Metro area has a population of 3,282,782 people, about 0.00% of whom live in ZIP Code 91979. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | San Diego-Chula Vista-Carlsbad, CASource: Census |
| CBSA Number: | 41740Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 3,282,782Source: Census |
| MSA: | San Diego, CA MSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 51Source: USPS |
| Congressional Land Area: | 4791.61 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 0673696Source: Census |
| Place Name: | Spring Valley CDP (San Diego County); CaliforniaSource: Census |
We could not locate which school district 91979 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.