| City: | Northridge, California |
| County: | Los Angeles County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 10:04:54 PM |
| Population: | No Population Data |
| Area Codes: | 747 / 818 |
| Classification: | PO Box |
| Coordinates: | 34.2284, -118.5356 |
| Quick Link: |
ZIP code 91328 is a PO Box-only ZIP serving part of the Northridge neighborhood in Los Angeles, California. It doesn't have its own geographic territory. Instead, it exists as a point location within ZIP 91325, which handles street delivery for the surrounding area.
The post office maintains 228 PO Boxes and serves 85 business delivery points. The address data shows two streets: Chatsworth Street and Reseda Boulevard. Both have unit designators, indicating these are PO Box Street Addresses (PBSA). Customers can receive mail addressed to the post office's physical street address with their box number as a unit number, instead of using the traditional "PO Box" format.
This isn't a PO Box Only Zone, meaning Northridge residents have alternatives for mail delivery. Most use the standard street delivery provided by ZIP 91325 and other nearby ZIPs. The 228 PO Boxes here serve customers who prefer or need a box, whether for business, privacy, or convenience. With 12 business establishments and 99 employees working in this ZIP, the boxes also support local commercial activity.
Both streets are used for PO Box Street Addressing, allowing customers to use the post office's physical address with their box number.
ZIP Code 91328 supports both business and residential activity. According to the Business Census (2024), there are 10 business establishments, employing about 75 people with an annual payroll of $3,992,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 306Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 10Source: CBP |
| 1st Quarter Payroll: | $987,000Source: CBP |
| Annual Payroll: | $3,992,000Source: CBP |
| # of Employees: | 75Source: CBP |
ZIP Code 91328 is located in Los Angeles County, California, within the Los Angeles-Long Beach-Anaheim, CA Metropolitan Statistical Area (CBSA 31080) and California's 32nd Congressional District. This Metro area has a population of 13,012,469 people, about 0.00% of whom live in ZIP Code 91328, 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: | 13,012,469Source: Census |
| MSA: | Los Angeles-Riverside-Orange County, CASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 32Source: USPS |
| Congressional Land Area: | 124.23 sq miSource: Census |
| PMSA: | Los Angeles-Long Beach, CA PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | --Source: Census |
| Place Name: | --Source: Census |
We could not locate which school district 91328 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.