| City: | Pasadena, California |
| Names to Avoid: | Ralph M Parsons Co |
| County: | Los Angeles County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 10:02:53 PM |
| Population: | No Population Data |
| Area Codes: | 323 / 626 / 738 |
| Classification: | Unique [Company/Government] |
| Coordinates: | 34.1478, -118.1436 |
| Quick Link: |
The Ralph M. Parsons Company, now Parsons Corporation, historically operated under dedicated ZIP code 91124 in Pasadena, Los Angeles County. Ralph M. Parsons founded the engineering firm in 1944 with $100,000 in capital, initially supporting post-World War II aerospace and defense projects in Southern California. The company moved its headquarters to Pasadena in 1974, consolidating offices into facilities on Walnut Street that housed over 4,500 employees. Parsons Corporation relocated its headquarters to Virginia in 2019, though this ZIP continues to serve remaining operations.
Ten ZIP+4 codes route mail to facilities on Walnut Street including the Ralph M Parsons Company and Engineering Science buildings. Census Business Patterns shows 10 establishments employing 1,473 workers in this ZIP, reflecting significant commercial activity. Parsons Corporation remains a major technology-focused defense, intelligence, and infrastructure engineering firm operating in over 30 countries. No Census residential data exists for this ZIP. Pasadena is the valid mailing city.
| Establishments: | 10 |
| Employment: | 1,473 |
| Residential: | 0 |
| Business: | 6 |
Buildings registered in the USPS ZIP+4 database with designated codes for direct mail delivery.
ZIP Code 91124 supports both business and residential activity. According to the Business Census (2024), there are 12 business establishments, employing about 1,841 people with an annual payroll of $198,814,000. USPS data shows 0 residential mailboxes and 6 business mailboxes, reflecting local delivery coverage.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 6Source: USPS |
| Total Delivery Receptacles: | 6Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 12Source: CBP |
| 1st Quarter Payroll: | $48,996,000Source: CBP |
| Annual Payroll: | $198,814,000Source: CBP |
| # of Employees: | 1,841Source: CBP |
ZIP Code 91124 is located in Los Angeles County, California, within the Los Angeles-Long Beach-Anaheim, CA Metropolitan Statistical Area (CBSA 31080) and California's 28th Congressional District. This Metro area has a population of 13,012,469 people, about 0.00% of whom live in ZIP Code 91124, 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: | 28Source: USPS |
| Congressional Land Area: | 218.45 sq miSource: Census |
| PMSA: | Los Angeles-Long Beach, CA PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 0656000Source: Census |
| Place Name: | Pasadena city; CaliforniaSource: Census |
We could not locate which school district 91124 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.