| City: | Pasadena, California |
| Names to Avoid: | Shared Firm Zip Code |
| County: | Los Angeles County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 9:35:33 AM |
| Population: | No Population Data |
| Area Codes: | 323 / 626 / 738 |
| Classification: | Unique [Company/Government] |
| Coordinates: | 34.1478, -118.1436 |
| Quick Link: |
ZIP code 91110 serves as a "Shared Firm Zip Code" in Pasadena, Los Angeles County, California. This USPS designation indicates the ZIP is used by multiple business entities rather than a single organization. Such shared designations allow the postal service to efficiently route mail for several companies or divisions using the same postal infrastructure. The ZIP is located in Pasadena's West Central neighborhood, approximately 10 miles from downtown Los Angeles. This unique designation has been in service for over two decades.
Three ZIP+4 codes route mail through this designation, though no specific building names appear in postal records. The shared firm classification explains the lack of a single identifiable entity. No Census residential data exists for this ZIP. Pasadena is the valid mailing city.
| Residential: | 0 |
| Business: | 1 |
ZIP Code 91110 is assigned to a single organization or institution. Detailed business demographics are not published for unique ZIP Codes.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 1Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 0Source: CBP |
| 1st Quarter Payroll: | $0Source: CBP |
| Annual Payroll: | $0Source: CBP |
| # of Employees: | 0Source: CBP |
ZIP Code 91110 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 0 people, about 0.00% of whom live in ZIP Code 91110, 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: | 0Source: 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 91110 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 February 1, 2026.