Navigating Pasadena, California, starts with understanding its postal layout. Whether you're moving to the area, mailing a package, or looking up local real estate, knowing the correct Pasadena zip code saves time and prevents delivery errors. This city spans multiple distinct zones, each tied to specific neighborhoods, commercial hubs, and landmarks.
Pasadena includes several primary postal codes ranging from 91101 to 91110, alongside specialized codes for institutions, P.O. boxes, and adjacent unincorporated areas like Altadena. Unlike cities with a single universal postal code, Pasadena's layout reflects its distinct historical expansion, geography, and urban density.
Complete List of Pasadena Zip Codes
Each postal code in the city serves a specific section of the community. Here is the accurate breakdown of postal codes across Pasadena:
- 91101: Covers the heart of downtown, including the historic Old Pasadena shopping district, civic center buildings, City Hall, and high-density residential apartments.
- 91103: Encompasses neighborhoods west of downtown, stretching toward the Rose Bowl Stadium, Brookside Golf Course, and the Linda Vista hillside residential area.
- 91104: Serves the northeastern residential neighborhoods, bordered by New York Drive and extending toward the base of the San Gabriel Mountains.
- 91105: Covers the southwestern portion of the city, including the upscale Orange Heights and Arroyo Seco areas, as well as the renowned Huntington Library, Art Museum, and Botanical Gardens.
- 91106: Encompasses south-central Pasadena, featuring commercial strips along California Boulevard, residential pockets near Caltech, and historic craftsman homes.
- 91107: Spans eastern Pasadena, including the Hastings Ranch shopping centers, East Pasadena residential areas, and foothill neighborhoods.
- 91108: Technically assigned to the independent city of San Marino, which is frequently associated with Pasadena mailing addresses due to shared local boundaries and services.
- 91109 & 91110: Dedicated exclusively to commercial post office boxes and high-volume business mail routing rather than residential delivery.
Neighborhood Breakdown and Geographic Boundaries
Understanding where these zones sit geographically helps when evaluating real estate, commute times, or local services. More details into this topic are explored by Associated Press.
Downtown Pasadena (91101) acts as the commercial core. It's packed with restaurants, retail stores, and loft apartments. If you head west toward 91103, the environment shifts dramatically into winding hillside roads, expansive canyon properties, and recreational spaces surrounding the Arroyo Seco.
Moving east toward 91107, the landscape transitions into traditional post-war suburban tracts and large retail plazas. Meanwhile, areas near Caltech and the Playhouse District in 91106 blend academic life with tree-lined residential streets, coffee shops, and mid-century apartment buildings.
Common Mistakes When Addressing Mail to Pasadena
Mailing errors happen frequently due to overlapping municipal boundaries and shared names in Los Angeles County. Avoid these frequent missteps:
- Confusing Pasadena with South Pasadena: South Pasadena is an entirely separate incorporated city with its own government, police department, and postal codes (primarily 91030). Don't use Pasadena zip codes for South Pasadena addresses.
- Mixing Up Altadena: Altadena is an unincorporated community directly north of Pasadena. It uses the 91001 postal code, not a 911xx code.
- Omitting Plus-4 Extensions: For large apartment complexes or corporate offices in downtown 91101, including the correct 4-digit extension speeds up sorting significantly.
Frequently Asked Questions
How many zip codes does Pasadena have?
Pasadena utilizes around eight primary active postal codes for residential and business delivery, plus specialized codes reserved strictly for post office boxes and government agencies.
Is San Marino considered part of Pasadena's postal grid?
While San Marino is an independent municipality, addresses within its borders often use Pasadena city names with the 91108 postal code due to historical postal routing.
What is the zip code for the Rose Bowl Stadium?
The Rose Bowl Stadium and its surrounding golf course and recreation areas fall under the 91103 postal code.
Can I look up a specific address owner by zip code?
No, postal codes only designate geographic delivery routes managed by the United States Postal Service, not individual property ownership. You'll need local county assessor records for property data.
