ZIP Code 91778: San Gabriel, CA
County: Los Angeles County
Coordinates: 34.09610, -118.10580
ZIP Type: Standard
Time Zone: Pacific Time (PT)
This profile provides an in-depth look at ZIP code 91778, serving San Gabriel in CA. It lies in Los Angeles County and supports delivery, planning, and address verification.
| Primary City | San Gabriel |
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| ZIP Code | 91778 |
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| County | Los Angeles County |
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| State | CA |
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| Latitude / Longitude | 34.09610, -118.10580 |
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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 91778 (not an exact boundary).
Geographic & Administrative Context
Coordinates for 91778 are listed as 34.09610 / -118.10580, useful for GPS and service checks in and around San Gabriel, CA.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 91778 for mail delivery and general location reference in
Los Angeles County,
CA.
Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with San Gabriel.
Related ZIP Codes (Nearby)
Explore other postal codes near San Gabriel within CA.
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Frequently Asked Questions
What is the primary city for ZIP code 91778?
The primary city for this ZIP code is San Gabriel, located in CA.
In which county is 91778 located?
ZIP code 91778 is situated within Los Angeles County, CA.
What are the coordinates for 91778?
The approximate center point is 34.09610 (Latitude) and -118.10580 (Longitude).
Is ZIP code 91778 active?
This page lists ZIP 91778 as Listed based on the latest refresh date shown above.
Does ZIP 91778 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