| City: | La Mesa, California |
| County: | San Diego County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 10:12:33 PM |
| Population: | No Population Data |
| Area Codes: | 619 / 858 |
| Classification: | PO Box |
| Coordinates: | 32.7679, -117.0224 |
| Quick Link: |
The post office at this location functions as an alternative mailing address hub. Businesses and residents can maintain a PO Box here while receiving street delivery at their physical addresses in adjacent ZIP codes. This dual-address arrangement is common in urban areas where a PO Box offers mail security or a professional business image. The concentration of 298 businesses using this facility suggests it serves as a commercial mail hub for the broader La Mesa community.
Only one street location appears in the ZIP's delivery records: Allison Ave, which houses the post office facility itself with 94 unit-based delivery records representing the PO Box infrastructure.
ZIP Code 91944 supports both business and residential activity. According to the Business Census (2024), there are 6 business establishments, employing about 12 people with an annual payroll of $305,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 830Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 6Source: CBP |
| 1st Quarter Payroll: | $47,000Source: CBP |
| Annual Payroll: | $305,000Source: CBP |
| # of Employees: | 12Source: CBP |
ZIP Code 91944 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 91944. 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: | 0640004Source: Census |
| Place Name: | La Mesa city; CaliforniaSource: Census |
ZIP Code 91944 is in the Grossmont Union High School District, which serves grades 9th thru 12th. There are 1 public school(s) in this ZIP Code, and we have located 3 private school(s). 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.