ZIP Code 91123: Pasadena, CA
County: Los Angeles County
Coordinates: 34.14780, -118.14450
ZIP Type: Standard
Time Zone: Pacific Time (PT)
Get a reliable snapshot of the Pasadena, CA postal area 91123. This page summarizes county, coordinates, and local facts to help with services and location research.
| Primary City | Pasadena |
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| ZIP Code | 91123 |
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| County | Los Angeles County |
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| State | CA |
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| Latitude / Longitude | 34.14780, -118.14450 |
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| ZIP Type | Standard |
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| Time Zone | Pacific Time (PT) |
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| Data Updated | 2026-01-08 |
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Maps & Useful Links
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These links show the approximate center point for ZIP 91123 (not an exact boundary).
Geographic & Administrative Context
The geographic center of ZIP code 91123 is approximately 34.14780 (latitude) and -118.14450 (longitude). This location sits within Los Angeles County, contributing to regional planning across CA.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 91123 for mail delivery and general location reference in
Los Angeles County,
CA.
Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Pasadena.
Related ZIP Codes (Nearby)
Explore other postal codes near Pasadena within CA.
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Frequently Asked Questions
What is the primary city for ZIP code 91123?
The primary city for this ZIP code is Pasadena, located in CA.
In which county is 91123 located?
ZIP code 91123 is situated within Los Angeles County, CA.
What are the coordinates for 91123?
The approximate center point is 34.14780 (Latitude) and -118.14450 (Longitude).
Is ZIP code 91123 active?
This page lists ZIP 91123 as Listed based on the latest refresh date shown above.
Does ZIP 91123 cover multiple areas?
Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.
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Methodology & Data Notes
How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.
Page updated: 2026-01-08